[
  {
    "dataDictionary": {
      "Title": "PDS4 Data Dictionary" ,
      "IM Version": "1.20.0.0" ,
      "LDD Version": "1.20.0.0" ,
      "Date": "2023-03-10T08:22:37" ,
      "Description": "This document is a dump of the contents of the PDS4 Data Dictionary" ,
      "namespaces": ["pds:"] ,
      "classDictionary": [
        {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI" ,
            "title": "ASCII_AnyURI" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII AnyURI class indicates a URI or its subclasses URN and URL."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode" ,
            "title": "ASCII_BibCode" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII BibCode class indicates a bibliographic code from the Astrophysics Data System."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.xml_schema_base_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "title": "ASCII_Boolean" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Boolean class indicates a boolean. The allowed values are 'true' and 'false'."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Boolean.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Boolean.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
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                "classOrder": "1040" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
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                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI" ,
            "title": "ASCII_DOI" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII DOI class indicates a digital object identifier (DOI)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
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                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
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                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "attributeId": [
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                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date" ,
            "title": "ASCII_Date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The ASCII_Date class indicates a date in either YMD or DOY format."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY" ,
            "title": "ASCII_Date_DOY" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Date_DOY class indicates a date in DOY format."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time" ,
            "title": "ASCII_Date_Time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The ASCII_Date_Time class indicates a date in either YMD or DOY format and time."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY" ,
            "title": "ASCII_Date_Time_DOY" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Date_Time_DOY class indicates a date in DOY format and time."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC" ,
            "title": "ASCII_Date_Time_DOY_UTC" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Date_Time_DOY_UTC class indicates a date (in DOY format) and time in UTC."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC" ,
            "title": "ASCII_Date_Time_UTC" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The ASCII_Date_Time_UTC class indicates a date and time in UTC format."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD" ,
            "title": "ASCII_Date_Time_YMD" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Date_Time_YMD class indicates a date in YMD format and time."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC" ,
            "title": "ASCII_Date_Time_YMD_UTC" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Date_Time_YMD_UTC class indicates a date (in YMD format) and time in UTC."
              , "associationList": [
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                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
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                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD" ,
            "title": "ASCII_Date_YMD" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Date_YMD class indicates a date in YMD format."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name" ,
            "title": "ASCII_Directory_Path_Name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII Directory Path Name class indicates a system directory path."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name" ,
            "title": "ASCII_File_Name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII File Name class indicates a system file name."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name" ,
            "title": "ASCII_File_Specification_Name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII File Specification Name class indicates a system file including directory path, file name, and file extension."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer" ,
            "title": "ASCII_Integer" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Integer class indicates an integer."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Integer.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Integer.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Integer.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Integer.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Integer.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Integer.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID" ,
            "title": "ASCII_LID" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_LID class indicates a logical identifier."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LID.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LID.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LID.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LID.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LID.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LID.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LID.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LID.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID" ,
            "title": "ASCII_LIDVID" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_LIDVID class indicates a logical identifier and version identifier."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.pattern"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID" ,
            "title": "ASCII_LIDVID_LID" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_LIDVID_LID class indicates a logical identifier and version identifier or simply the logical identfier."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.pattern"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "title": "ASCII_Local_Identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII Local Identifier class indicates a unique identifier local to the label."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.xml_schema_base_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference" ,
            "title": "ASCII_Local_Identifier_Reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Local_Identifier_Reference class indicates a reference to a unique identifier local to the label."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.xml_schema_base_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum" ,
            "title": "ASCII_MD5_Checksum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII MD5 Checksum class indicates a checksum computed by the Message-Digest algorithm 5 (MD5)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "title": "ASCII_NonNegative_Integer" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_NonNegative_Integer class indicates a non-negative  integer."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.pattern"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16" ,
            "title": "ASCII_Numeric_Base16" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII Numeric Base16 class indicates an ASCII character representation of a non-negative unsigned integer in base 16. Must consist of the characters 0 through 9, and A through F or a through f. May not be preceded by any sign (+\/-) notation."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2" ,
            "title": "ASCII_Numeric_Base2" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII Numeric Base2 class indicates an ASCII character representation of a non-negative unsigned integer in base 2. Must consist of the characters 0 and 1. May not be preceded by any sign (+\/-) notation."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8" ,
            "title": "ASCII_Numeric_Base8" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII Numeric Base8 class indicates an ASCII character representation of a non-negative unsigned integer in base 8. Must consist of the characters 0 through 7. May not be preceded by any sign (+\/-) notation."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "title": "ASCII_Real" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Real class indicates a real."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Real.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Real.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Real.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Real.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Real.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Real.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Real.pds.pattern"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "title": "ASCII_Short_String_Collapsed" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Short_String_Collapsed class indicates a limited length, whitespace-collapsed string."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved" ,
            "title": "ASCII_Short_String_Preserved" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Short_String_Preserved class indicates a limited length, whitespace-preserved string."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String" ,
            "title": "ASCII_String" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_String class indicates a limited length ASCII text string with whitespaces removed."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_String.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_String.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_String.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_String.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_String.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_String.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255" ,
            "title": "ASCII_String_Base_255" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_String_Base_255 class provides a base class for a 255 character ASCII string."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.xml_schema_base_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed" ,
            "title": "ASCII_Text_Collapsed" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Text_Collapsed class indicates an unlimited length, whitespace-collapsed text string."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "title": "ASCII_Text_Preserved" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Text_Preserved class indicates an unlimited length, whitespace-preserved text string."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time" ,
            "title": "ASCII_Time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_Time class indicates a time value."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Time.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Time.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Time.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Time.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Time.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Time.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Time.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_Time.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID" ,
            "title": "ASCII_VID" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The ASCII_VID class indicates a version identifier."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_VID.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_VID.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_VID.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_VID.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_VID.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_VID.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_VID.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.ASCII_VID.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Agency" ,
            "title": "Agency" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Agency class provides a description of an entity that provides regional or national level governance over nodes within the federated Planetary Data System."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Agency.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Agency.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Agency.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Agency.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Agency.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Aggregation_Object" ,
            "title": "Aggregation_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Aggregation Object class defines a Conceptual Object that is used to aggregate other objects."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Airborne" ,
            "title": "Airborne" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Airborne class provides a description of the physical object that transports a platform by or through air."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Airborne.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Airborne.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Airborne.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Airborne.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Airborne.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Airborne.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Alias" ,
            "title": "Alias" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Alias class provides a single alternate name and identification for this product in this or some other archive or data system."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Alias.pds.alternate_id" ,
                "title": "alternate_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Alias.pds.alternate_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Alias.pds.alternate_title" ,
                "title": "alternate_title" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Alias.pds.alternate_title"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Alias.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Alias.pds.comment"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Alias_List" ,
            "title": "Alias_List" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Alias_List class provides a list of paired alternate names and identifications for this product in this or some other archive or data system."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Alias_List.pds.alias.Alias" ,
                "title": "alias" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Alias"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Ancillary_Object" ,
            "title": "Ancillary_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Ancillary Object defines a Supplemental Object that cannot reasonably be classified as any other Supplemental Object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Archival_Information_Package" ,
            "title": "Archival_Information_Package" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Archival Information Package (AIP) class defines an Information Package consisting of the Content Information and the associated Preservation Description Information (PDI), which is preserved within an archive that conforms to the Open Archive Information System (OAIS) Reference Model."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Archive_Support_Object" ,
            "title": "Archive_Support_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Archive Support defines a Supplemental Object that is used by the system for an archive function."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Array" ,
            "title": "Array" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "2.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Array class defines a homogeneous N-dimensional array of scalars. The Array class is the parent class for all n-dimensional arrays of scalars."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Array.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.axes" ,
                "title": "axes" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Array.pds.axes"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.axis_index_order" ,
                "title": "axis_index_order" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Array.pds.axis_index_order"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Array.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.has_Element_Array.Element_Array" ,
                "title": "has_Element_Array" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Element_Array"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.has_Axis_Array.Axis_Array" ,
                "title": "has_Axis_Array" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Axis_Array"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.associated_Special_Constants.Special_Constants" ,
                "title": "associated_Special_Constants" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Special_Constants"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.associated_Statistics.Object_Statistics" ,
                "title": "associated_Statistics" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.local_internal_reference.Local_Internal_Reference" ,
                "title": "local_internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "0" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Local_Internal_Reference"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Array_1D" ,
            "title": "Array_1D" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Array 1D class is the parent class for all one dimensional array based classes."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array_1D.Array.generalization" ,
                "title": "Array" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Array"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Array.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.axis_index_order" ,
                "title": "axis_index_order" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Array.pds.axis_index_order"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Array.pds.description"
                 ]
              }
            }
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            }
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              }
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                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Element_Array"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.associated_Special_Constants.Special_Constants" ,
                "title": "associated_Special_Constants" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Special_Constants"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.associated_Statistics.Object_Statistics" ,
                "title": "associated_Statistics" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Array.pds.local_internal_reference.Local_Internal_Reference" ,
                "title": "local_internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "0" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Local_Internal_Reference"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Axis_Array" ,
            "title": "Axis_Array" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Axis Array class is used as a component of the array class and defines an axis of the array."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.axis_name" ,
                "title": "axis_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Axis_Array.pds.axis_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Axis_Array.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.elements" ,
                "title": "elements" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Axis_Array.pds.elements"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.unit" ,
                "title": "unit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Axis_Array.pds.unit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.sequence_number" ,
                "title": "sequence_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Axis_Array.pds.sequence_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.has_Band_Bin_Set.Band_Bin_Set" ,
                "title": "has_Band_Bin_Set" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Band_Bin_Set"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin" ,
            "title": "Band_Bin" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Band_Bin class specifies the characteristics of an individual spectral band in a spectral qube."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.band_number" ,
                "title": "band_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.band_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.band_width" ,
                "title": "band_width" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.band_width"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.center_wavelength" ,
                "title": "center_wavelength" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.center_wavelength"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.detector_number" ,
                "title": "detector_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.detector_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.filter_number" ,
                "title": "filter_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.filter_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.grating_position" ,
                "title": "grating_position" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.grating_position"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.original_band" ,
                "title": "original_band" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.original_band"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.standard_deviation" ,
                "title": "standard_deviation" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.standard_deviation"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.scaling_factor" ,
                "title": "scaling_factor" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.scaling_factor"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.value_offset" ,
                "title": "value_offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Band_Bin.pds.value_offset"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin_Set" ,
            "title": "Band_Bin_Set" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Band_Bin_Set class contains the spectral characteristics for all the spectral bands in a qube."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Band_Bin_Set.pds.has_band_bin.Band_Bin" ,
                "title": "has_band_bin" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Band_Bin"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Binary_Data_Type" ,
            "title": "Binary_Data_Type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Binary Data Type class is the abstract parent class for binary data types found in the digital objects."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Bundle" ,
            "title": "Bundle" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Bundle class describes a collection of collections."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Bundle.pds.bundle_type" ,
                "title": "bundle_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Bundle.pds.bundle_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Bundle.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Bundle.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Bundle.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Bundle_Member_Entry" ,
            "title": "Bundle_Member_Entry" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Bundle Member Entry class provides a member reference to a collection."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.lid_reference" ,
                "title": "lid_reference" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice#1" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.lid_reference",
                  "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.lidvid_reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.member_status" ,
                "title": "member_status" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.member_status"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.reference_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Byte_Stream" ,
            "title": "Byte_Stream" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Byte Stream class defines a stream of bytes."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type" ,
            "title": "Character_Data_Type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Character Data Type class is the parent class for data types used to classify the values of attributes in class descriptions, i.e., product labels and character digital objects."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.Data_Type.generalization" ,
                "title": "Data_Type" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Data_Type"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.xml_schema_base_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Checksum_Manifest" ,
            "title": "Checksum_Manifest" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Checksum_Manifest class defines a two column table for file references and checksums."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Checksum_Manifest.Parsable_Byte_Stream.generalization" ,
                "title": "Parsable_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Checksum_Manifest.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Checksum_Manifest.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Checksum_Manifest.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Checksum_Manifest.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Citation_Information" ,
            "title": "Citation_Information" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Citation_Information class provides specific fields often used in citing the product in journal articles, abstract services, and other reference contexts."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.author_list" ,
                "title": "author_list" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Citation_Information.pds.author_list"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.editor_list" ,
                "title": "editor_list" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Citation_Information.pds.editor_list"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.publication_year" ,
                "title": "publication_year" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Citation_Information.pds.publication_year"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.doi" ,
                "title": "doi" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1035" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Citation_Information.pds.doi"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.keyword" ,
                "title": "keyword" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Citation_Information.pds.keyword"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Citation_Information.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.has_Funding_Acknowledgement.Funding_Acknowledgement" ,
                "title": "has_Funding_Acknowledgement" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Funding_Acknowledgement"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Collection" ,
            "title": "Collection" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Collection class provides a description of a set of products."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Collection.pds.collection_type" ,
                "title": "collection_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Collection.pds.collection_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Collection.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Collection.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Complex" ,
            "title": "Complex" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "Complex Binary Data Types"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ComplexLSB16" ,
            "title": "ComplexLSB16" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Complex number consisting of two LSB 8 byte decimal reals."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ComplexLSB8" ,
            "title": "ComplexLSB8" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Complex number consisting of two LSB 4 byte decimal reals."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ComplexMSB16" ,
            "title": "ComplexMSB16" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Complex number consisting of two MSB 8 byte decimal reals."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.ComplexMSB8" ,
            "title": "ComplexMSB8" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Complex number consisting of two MSB 4 byte decimal reals."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Composite_Structure" ,
            "title": "Composite_Structure" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Composite Structure class provides a general framework for defining a structure that consists of two or more simpler structures"
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.title" ,
                "title": "title" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Composite_Structure.pds.title"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Composite_Structure.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.type_description" ,
                "title": "type_description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Composite_Structure.pds.type_description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Composite_Structure.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.has_Local_ID_Reference.Local_ID_Reference" ,
                "title": "has_Local_ID_Reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.has_Local_ID_Relation.Local_ID_Relation" ,
                "title": "has_Local_ID_Relation" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Relation"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Conceptual_Context_Object" ,
            "title": "Conceptual_Context_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Conceptual Context Object class defines a Conceptual Object that is used to provide contextual information for an Observational Object."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Conceptual_Object" ,
            "title": "Conceptual_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Conceptual Object class defines a non-tangible object that is also not a digital object."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Context_Area" ,
            "title": "Context_Area" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Context Area provides context information for a product."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Context_Area.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_time_coordinates.Time_Coordinates" ,
                "title": "has_time_coordinates" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Time_Coordinates"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_primary_result_description.Primary_Result_Summary" ,
                "title": "has_primary_result_description" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Primary_Result_Summary"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_investigation_area.Investigation_Area" ,
                "title": "has_investigation_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Investigation_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_observing_system.Observing_System" ,
                "title": "has_observing_system" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Observing_System"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_target_identification.Target_Identification" ,
                "title": "has_target_identification" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Target_Identification"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_mission_area.Mission_Area" ,
                "title": "has_mission_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Mission_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_discipline_area.Discipline_Area" ,
                "title": "has_discipline_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Discipline_Area"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class" ,
            "title": "DD_Associate_External_Class" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Associate_External_Class class allows the definition of permissible values in Ingest_LDD for attributes defined in external namespaces."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.class_name" ,
                "title": "class_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.class_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.minimum_occurrences" ,
                "title": "minimum_occurrences" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.minimum_occurrences"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.maximum_occurrences" ,
                "title": "maximum_occurrences" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.maximum_occurrences"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.dd_Context_Value_List.DD_Context_Value_List" ,
                "title": "dd_Context_Value_List" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Context_Value_List"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association" ,
            "title": "DD_Association" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Association class defines the association between two classes or a class and an attribute in a data dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.identifier_reference" ,
                "title": "identifier_reference" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1005" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association.pds.identifier_reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association.pds.reference_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.minimum_occurrences" ,
                "title": "minimum_occurrences" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association.pds.minimum_occurrences"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.maximum_occurrences" ,
                "title": "maximum_occurrences" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association.pds.maximum_occurrences"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.constant_value" ,
                "title": "constant_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association.pds.constant_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.dd_attribute_reference.DD_Attribute_Reference" ,
                "title": "dd_attribute_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.dd_class_reference.DD_Class_Reference" ,
                "title": "dd_class_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Reference"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association_External" ,
            "title": "DD_Association_External" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The DD_Association_External class defines the association between classes and attributes within the local data dictionary and those external to the local data dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association_External.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association_External.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association_External.pds.reference_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.minimum_occurrences" ,
                "title": "minimum_occurrences" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association_External.pds.minimum_occurrences"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.maximum_occurrences" ,
                "title": "maximum_occurrences" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Association_External.pds.maximum_occurrences"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute" ,
            "title": "DD_Attribute" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Attribute class defines an attribute for a data dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.nillable_flag" ,
                "title": "nillable_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute.pds.nillable_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.submitter_name" ,
                "title": "submitter_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute.pds.submitter_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.definition" ,
                "title": "definition" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute.pds.definition"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.terminological_entry.Terminological_Entry" ,
                "title": "terminological_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1100" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.value_domain_entry.DD_Value_Domain" ,
                "title": "value_domain_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended" ,
            "title": "DD_Attribute_Extended" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Attribute_Extended class allows the extension of an existing attribute."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.instance_id" ,
                "title": "instance_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.instance_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.definition" ,
                "title": "definition" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.definition"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.terminological_entry.Terminological_Entry" ,
                "title": "terminological_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.value_domain_entry.DD_Value_Domain" ,
                "title": "value_domain_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full" ,
            "title": "DD_Attribute_Full" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Attribute_Full class provides a more complete definition of an attribute in the data dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.class_name" ,
                "title": "class_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.class_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.steward_id" ,
                "title": "steward_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.steward_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.nillable_flag" ,
                "title": "nillable_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.nillable_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.submitter_name" ,
                "title": "submitter_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.submitter_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.definition" ,
                "title": "definition" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.definition"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.registered_by" ,
                "title": "registered_by" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1120" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.registered_by"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.registration_authority_id" ,
                "title": "registration_authority_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1130" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.registration_authority_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.attribute_concept" ,
                "title": "attribute_concept" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1140" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.attribute_concept"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1150" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.terminological_entry.Terminological_Entry" ,
                "title": "terminological_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1160" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.value_domain_entry.DD_Value_Domain_Full" ,
                "title": "value_domain_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1170" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Reference" ,
            "title": "DD_Attribute_Reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD Attribute Reference class provides a reference to an attribute using a namespace identifier and the attribute name."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Reference.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Reference.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Reference.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Reference.pds.name"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class" ,
            "title": "DD_Class" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Class class defines a class for a data dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.submitter_name" ,
                "title": "submitter_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class.pds.submitter_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.definition" ,
                "title": "definition" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class.pds.definition"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.abstract_flag" ,
                "title": "abstract_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class.pds.abstract_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.element_flag" ,
                "title": "element_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1065" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class.pds.element_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.dd_association.DD_Associate_External_Class" ,
                "title": "dd_association" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1090" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Associate_External_Class",
                  "0001_NASA_PDS_1.pds.DD_Association",
                  "0001_NASA_PDS_1.pds.DD_Association_External"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.terminological_entry.Terminological_Entry" ,
                "title": "terminological_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1100" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended" ,
            "title": "DD_Class_Extended" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Class_Extended class allows the extension of an existing class."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.instance_id" ,
                "title": "instance_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.instance_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.definition" ,
                "title": "definition" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.definition"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.terminological_entry.Terminological_Entry" ,
                "title": "terminological_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full" ,
            "title": "DD_Class_Full" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Class_Full class provides a more complete definition of a class for a data dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.steward_id" ,
                "title": "steward_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.steward_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.submitter_name" ,
                "title": "submitter_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.submitter_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.definition" ,
                "title": "definition" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.definition"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.registered_by" ,
                "title": "registered_by" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.registered_by"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.registration_authority_id" ,
                "title": "registration_authority_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.registration_authority_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.abstract_flag" ,
                "title": "abstract_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1120" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.abstract_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.element_flag" ,
                "title": "element_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1125" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full.pds.element_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1130" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.dd_association.DD_Association" ,
                "title": "dd_association" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1140" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Association"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.terminological_entry.Terminological_Entry" ,
                "title": "terminological_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1150" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Reference" ,
            "title": "DD_Class_Reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD Class Reference class provides a reference to a class using a namespace identifier and the class name."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Reference.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Reference.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Class_Reference.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Reference.pds.name"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Context_Value_List" ,
            "title": "DD_Context_Value_List" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Context_Value_List class identifies an attribute and its relative xpath for the definition of permissible values and their meanings."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Context_Value_List.pds.attribute_name" ,
                "title": "attribute_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Context_Value_List.pds.attribute_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Context_Value_List.pds.attribute_relative_xpath" ,
                "title": "attribute_relative_xpath" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Context_Value_List.pds.attribute_relative_xpath"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Context_Value_List.pds.permissible_value.DD_Permissible_Value" ,
                "title": "permissible_value" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value" ,
            "title": "DD_Permissible_Value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Permissible_Value class lists permissible values and their meanings."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value.pds.value" ,
                "title": "value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value.pds.value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value.pds.value_meaning" ,
                "title": "value_meaning" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value.pds.value_meaning"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value.pds.terminological_entry.Terminological_Entry" ,
                "title": "terminological_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full" ,
            "title": "DD_Permissible_Value_Full" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Permissible_Value_Full class lists permissible values, their meanings, and the dates when active."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value" ,
                "title": "value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_meaning" ,
                "title": "value_meaning" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_meaning"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_begin_date" ,
                "title": "value_begin_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_begin_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_end_date" ,
                "title": "value_end_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_end_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.terminological_entry.Terminological_Entry" ,
                "title": "terminological_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule" ,
            "title": "DD_Rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Rule class defines a Schematron rule for a data dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Rule.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.rule_context" ,
                "title": "rule_context" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Rule.pds.rule_context"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.rule_assign" ,
                "title": "rule_assign" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Rule.pds.rule_assign"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.dd_attribute_reference.DD_Attribute_Reference" ,
                "title": "dd_attribute_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1033" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.dd_class_reference.DD_Class_Reference" ,
                "title": "dd_class_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1036" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.rule_statement.DD_Rule_Statement" ,
                "title": "rule_statement" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Rule_Statement"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement" ,
            "title": "DD_Rule_Statement" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Rule_Statement class defines a Schematron rule statement."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_type" ,
                "title": "rule_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_test" ,
                "title": "rule_test" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_test"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_message" ,
                "title": "rule_message" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_message"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_description" ,
                "title": "rule_description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_value" ,
                "title": "rule_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_value"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain" ,
            "title": "DD_Value_Domain" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Value_Domain class defines an attribute's permissible values and their constraints."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.enumeration_flag" ,
                "title": "enumeration_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.enumeration_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.value_data_type" ,
                "title": "value_data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.value_data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.unit_of_measure_type" ,
                "title": "unit_of_measure_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.unit_of_measure_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.permissible_value.DD_Permissible_Value" ,
                "title": "permissible_value" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1110" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full" ,
            "title": "DD_Value_Domain_Full" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The DD_Value_Domain_Full class provides a more complete definition of a attribute's value domain."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.enumeration_flag" ,
                "title": "enumeration_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.enumeration_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.value_data_type" ,
                "title": "value_data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.value_data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.unit_of_measure_type" ,
                "title": "unit_of_measure_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.unit_of_measure_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.conceptual_domain" ,
                "title": "conceptual_domain" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.conceptual_domain"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.permissible_value.DD_Permissible_Value_Full" ,
                "title": "permissible_value" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1120" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.DIP_Deep_Archive" ,
            "title": "DIP_Deep_Archive" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Dissemination Information Package Deep Archive class is an Information Package derived from one or more AIPs and is received by the National Space Science Data Center (NSSDC)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Object" ,
            "title": "Data_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Data Object class defines a thing about which almost nothing is known."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Type" ,
            "title": "Data_Type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Data Type class is the abstract parent class for several classes of data types."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Decimal_Integer" ,
            "title": "Decimal_Integer" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "Decimal Integer Binary Data Types"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Decimal_Real" ,
            "title": "Decimal_Real" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "Floating Point Binary Data Types"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Digital_Object" ,
            "title": "Digital_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Digital Object class defines a sequence of digital bits."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Discipline_Area" ,
            "title": "Discipline_Area" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Discipline area allows the insertion of discipline specific metadata."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Discipline_Facets" ,
            "title": "Discipline_Facets" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Discipline_Facets class contains the discipline-related search facets.  It is required and may not be repeated. Note that Science_Facets was modeled with Discipline_Facets as a component and Discipline_Facets was modeled with Group_Facet1 and Group_Facet2 as components. This dependency hierarchy was flattened and only Science_Facets exists in the schema."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Discipline_Facets.pds.discipline_name" ,
                "title": "discipline_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Discipline_Facets.pds.discipline_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Discipline_Facets.pds.has_Group_Facet1.Group_Facet1" ,
                "title": "has_Group_Facet1" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Group_Facet1"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Discipline_Facets.pds.has_Group_Facet2.Group_Facet2" ,
                "title": "has_Group_Facet2" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Group_Facet2"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Display_2D_Image" ,
            "title": "Display_2D_Image" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Display_2D_Image class provides attributes to enable the display of a 2 dimensional image."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Display_2D_Image.pds.line_display_direction" ,
                "title": "line_display_direction" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Display_2D_Image.pds.line_display_direction"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Display_2D_Image.pds.sample_display_direction" ,
                "title": "sample_display_direction" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Display_2D_Image.pds.sample_display_direction"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Dissemination_Information_Package" ,
            "title": "Dissemination_Information_Package" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Dissemination Information Package (DIP) class defines an Information Package, derived from one or more AIPs, that is received by a consumer."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Document" ,
            "title": "Document" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "2.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Document class describes a document."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.revision_id" ,
                "title": "revision_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.revision_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.document_name" ,
                "title": "document_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.document_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.doi" ,
                "title": "doi" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.doi"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.author_list" ,
                "title": "author_list" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.author_list"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.editor_list" ,
                "title": "editor_list" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.editor_list"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.acknowledgement_text" ,
                "title": "acknowledgement_text" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.acknowledgement_text"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.copyright" ,
                "title": "copyright" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.copyright"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.publication_date" ,
                "title": "publication_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.publication_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.document_editions" ,
                "title": "document_editions" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1085" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.document_editions"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.has_document_edition.Document_Edition" ,
                "title": "has_document_edition" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1095" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Document_Edition"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Document_Edition" ,
            "title": "Document_Edition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A Document Edition is one complete version of the document in a set of files that is distinguished by language, a unique assemblage of file formats, or some other criteria."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.edition_name" ,
                "title": "edition_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document_Edition.pds.edition_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.starting_point_identifier" ,
                "title": "starting_point_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document_Edition.pds.starting_point_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.language" ,
                "title": "language" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document_Edition.pds.language"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.files" ,
                "title": "files" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document_Edition.pds.files"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document_Edition.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.has_document_file.Document_File" ,
                "title": "has_document_file" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Document_File"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Document_File" ,
            "title": "Document_File" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.4.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Document File class describes a file which is a part of a document."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_File.File.generalization" ,
                "title": "File" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_File.pds.directory_path_name" ,
                "title": "directory_path_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document_File.pds.directory_path_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.file_name" ,
                "title": "file_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.file_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Document_File.pds.document_standard_id" ,
                "title": "document_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Document_File.pds.document_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.creation_date_time" ,
                "title": "creation_date_time" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.creation_date_time"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.file_size" ,
                "title": "file_size" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.file_size"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.file_URL" ,
                "title": "file_URL" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.file_URL"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Document_Object" ,
            "title": "Document_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Document Object defines a Supplemental Object that provides readable evidence for humans."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Element_Array" ,
            "title": "Element_Array" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Element Array class is used as a component of the array class and defines an element of the array."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Element_Array.pds.data_type" ,
                "title": "data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Element_Array.pds.data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Element_Array.pds.unit" ,
                "title": "unit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Element_Array.pds.unit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Element_Array.pds.scaling_factor" ,
                "title": "scaling_factor" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Element_Array.pds.scaling_factor"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Element_Array.pds.value_offset" ,
                "title": "value_offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Element_Array.pds.value_offset"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Audio" ,
            "title": "Encoded_Audio" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Encoded_Audio class is used for files containing audio data in standard formats, such as WAV."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Audio.Encoded_Byte_Stream.generalization" ,
                "title": "Encoded_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Audio.pds.encoding_standard_id" ,
                "title": "encoding_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Audio.pds.encoding_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Binary" ,
            "title": "Encoded_Binary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Encoded Binary class describes a binary encoded byte stream. This class is used to describe files in the repository that are being registered using  Product_File_Repository."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Binary.Encoded_Byte_Stream.generalization" ,
                "title": "Encoded_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Binary.pds.encoding_standard_id" ,
                "title": "encoding_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Binary.pds.encoding_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream" ,
            "title": "Encoded_Byte_Stream" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Encoded Byte Stream class defines byte streams that must be decoded by software before use. These byte streams must only use standard encodings. The Encoded Byte Stream class is the parent class for all encoded byte streams."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.encoding_standard_id" ,
                "title": "encoding_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.encoding_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_External" ,
            "title": "Encoded_External" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Encoded External class describes an encoded byte stream that has been encoded using an encoding scheme that is compliant to an external standard."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_External.Encoded_Byte_Stream.generalization" ,
                "title": "Encoded_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.encoding_standard_id" ,
                "title": "encoding_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.encoding_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Header" ,
            "title": "Encoded_Header" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Encoded Header class describes a header that has been encoded using an encoding scheme that is compliant to an external standard."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Header.Encoded_Byte_Stream.generalization" ,
                "title": "Encoded_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Header.pds.encoding_standard_id" ,
                "title": "encoding_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Header.pds.encoding_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Image" ,
            "title": "Encoded_Image" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Encoded Image class is used for ancillary images in standard formats, such as JPEG."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Image.Encoded_Byte_Stream.generalization" ,
                "title": "Encoded_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Image.pds.encoding_standard_id" ,
                "title": "encoding_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Image.pds.encoding_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Native" ,
            "title": "Encoded_Native" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Encoded Native class describes a binary encoded byte stream. This class is used to describe data objects for Product_Native."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Native.Encoded_Byte_Stream.generalization" ,
                "title": "Encoded_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Native.pds.encoding_standard_id" ,
                "title": "encoding_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Native.pds.encoding_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Video" ,
            "title": "Encoded_Video" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Encoded_Video class is used for files containing video with or without audio data in standard MPEG-4 format."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Video.Encoded_Byte_Stream.generalization" ,
                "title": "Encoded_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Encoded_Video.pds.encoding_standard_id" ,
                "title": "encoding_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Encoded_Video.pds.encoding_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.External_Reference" ,
            "title": "External_Reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The External_Reference class is used to reference a source outside the PDS registry system."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.doi" ,
                "title": "doi" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference.pds.doi"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.reference_text" ,
                "title": "reference_text" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference.pds.reference_text"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.External_Reference_Extended" ,
            "title": "External_Reference_Extended" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The External_Reference_Extended class is used to reference a source outside the PDS registry system. This extension is used in the local data dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference_Extended.External_Reference.generalization" ,
                "title": "External_Reference" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.doi" ,
                "title": "doi" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference.pds.doi"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference_Extended.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference_Extended.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.reference_text" ,
                "title": "reference_text" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference.pds.reference_text"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference_Extended.pds.url" ,
                "title": "url" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference_Extended.pds.url"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.External_Reference.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Facility" ,
            "title": "Facility" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Facility class provides a name and address for a  terrestrial observatory or laboratory."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Facility.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Facility.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Facility.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Facility.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Facility.pds.address" ,
                "title": "address" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Facility.pds.address"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Facility.pds.country" ,
                "title": "country" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Facility.pds.country"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Facility.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Facility.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Facility.pds.data_object.Physical_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Physical_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Field" ,
            "title": "Field" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Field class defines a field of a record and is the parent class of all specific field classes.The Field class defines a field of a record or a field of a group and is the parent class of all specific field classes."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field.pds.field_number" ,
                "title": "field_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field.pds.field_number"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary" ,
            "title": "Field_Binary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Field_Binary class defines a field of a binary record or a field of a binary group."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field.pds.field_number" ,
                "title": "field_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field.pds.field_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.field_location" ,
                "title": "field_location" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.field_location"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.data_type" ,
                "title": "data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.field_length" ,
                "title": "field_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.field_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.field_format" ,
                "title": "field_format" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.field_format"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.unit" ,
                "title": "unit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.unit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.scaling_factor" ,
                "title": "scaling_factor" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.scaling_factor"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.value_offset" ,
                "title": "value_offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.value_offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Binary.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.associated_Special_Constants.Special_Constants" ,
                "title": "associated_Special_Constants" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Special_Constants"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.associated_Statistics.Field_Statistics" ,
                "title": "associated_Statistics" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.has_Packed_Data_Fields.Packed_Data_Fields" ,
                "title": "has_Packed_Data_Fields" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1120" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Packed_Data_Fields"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit" ,
            "title": "Field_Bit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Field_Bit class provides parameters for extracting one field out of a string of bytes which contains packed data (that is, data values either smaller than a single byte, or crossing byte boundaries, or both."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.start_bit_location" ,
                "title": "start_bit_location" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.start_bit_location"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field.pds.field_number" ,
                "title": "field_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field.pds.field_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.start_bit" ,
                "title": "start_bit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.start_bit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.stop_bit_location" ,
                "title": "stop_bit_location" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1025" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.stop_bit_location"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.stop_bit" ,
                "title": "stop_bit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.stop_bit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.data_type" ,
                "title": "data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.field_format" ,
                "title": "field_format" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.field_format"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.unit" ,
                "title": "unit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.unit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.scaling_factor" ,
                "title": "scaling_factor" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.scaling_factor"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.value_offset" ,
                "title": "value_offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.value_offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Bit.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.associated_Special_Constants.Special_Constants" ,
                "title": "associated_Special_Constants" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Special_Constants"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character" ,
            "title": "Field_Character" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Field_Character class defines a field of a character record or a field of a character group."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field.pds.field_number" ,
                "title": "field_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field.pds.field_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.field_location" ,
                "title": "field_location" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.field_location"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.data_type" ,
                "title": "data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.field_length" ,
                "title": "field_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.field_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.field_format" ,
                "title": "field_format" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.field_format"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.validation_format" ,
                "title": "validation_format" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1055" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.validation_format"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.unit" ,
                "title": "unit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.unit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.scaling_factor" ,
                "title": "scaling_factor" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.scaling_factor"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.value_offset" ,
                "title": "value_offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.value_offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Character.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.associated_Special_Constants.Special_Constants" ,
                "title": "associated_Special_Constants" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Special_Constants"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.associated_Statistics.Field_Statistics" ,
                "title": "associated_Statistics" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited" ,
            "title": "Field_Delimited" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Field_Delimited class defines a field of a delimited record or a field of a delimited group."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field.pds.field_number" ,
                "title": "field_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field.pds.field_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.data_type" ,
                "title": "data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited.pds.data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.maximum_field_length" ,
                "title": "maximum_field_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited.pds.maximum_field_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.field_format" ,
                "title": "field_format" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited.pds.field_format"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.unit" ,
                "title": "unit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited.pds.unit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.scaling_factor" ,
                "title": "scaling_factor" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited.pds.scaling_factor"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.value_offset" ,
                "title": "value_offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited.pds.value_offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.associated_Special_Constants.Special_Constants" ,
                "title": "associated_Special_Constants" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Special_Constants"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.associated_Statistics.Field_Statistics" ,
                "title": "associated_Statistics" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Statistics" ,
            "title": "Field_Statistics" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Field Statistics class provides a set of metrics for a column formed by a field in a repeating record."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.maximum" ,
                "title": "maximum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics.pds.maximum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.minimum" ,
                "title": "minimum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics.pds.minimum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.mean" ,
                "title": "mean" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics.pds.mean"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.standard_deviation" ,
                "title": "standard_deviation" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics.pds.standard_deviation"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.median" ,
                "title": "median" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics.pds.median"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Field_Statistics.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File" ,
            "title": "File" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File class consists of attributes that describe a file in a data store."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.file_name" ,
                "title": "file_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.file_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.creation_date_time" ,
                "title": "creation_date_time" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.creation_date_time"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.file_size" ,
                "title": "file_size" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.file_size"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File.pds.file_URL" ,
                "title": "file_URL" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File.pds.file_URL"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area" ,
            "title": "File_Area" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File_Area class defines a File and its component data objects."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Ancillary" ,
            "title": "File_Area_Ancillary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Ancillary class describes a file and one or more tagged_data_objects contained within the file."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Ancillary.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Ancillary.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Ancillary.pds.has_tagged_data_object.Array" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Array",
                  "0001_NASA_PDS_1.pds.Array_1D",
                  "0001_NASA_PDS_1.pds.Array_2D",
                  "0001_NASA_PDS_1.pds.Array_2D_Image",
                  "0001_NASA_PDS_1.pds.Array_2D_Map",
                  "0001_NASA_PDS_1.pds.Array_2D_Spectrum",
                  "0001_NASA_PDS_1.pds.Array_3D",
                  "0001_NASA_PDS_1.pds.Array_3D_Image",
                  "0001_NASA_PDS_1.pds.Array_3D_Movie",
                  "0001_NASA_PDS_1.pds.Array_3D_Spectrum",
                  "0001_NASA_PDS_1.pds.Checksum_Manifest",
                  "0001_NASA_PDS_1.pds.Encoded_Audio",
                  "0001_NASA_PDS_1.pds.Encoded_Header",
                  "0001_NASA_PDS_1.pds.Encoded_Image",
                  "0001_NASA_PDS_1.pds.Header",
                  "0001_NASA_PDS_1.pds.Stream_Text",
                  "0001_NASA_PDS_1.pds.Table_Binary",
                  "0001_NASA_PDS_1.pds.Table_Character",
                  "0001_NASA_PDS_1.pds.Table_Delimited"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Binary" ,
            "title": "File_Area_Binary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Binary class describes a file that contains an encoded byte stream."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Binary.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Binary.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Binary.pds.has_tagged_data_object.Encoded_Binary" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Encoded_Binary"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Browse" ,
            "title": "File_Area_Browse" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Browse class describes a file and one or more tagged_data_objects contained within the file."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Browse.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Browse.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Browse.pds.has_tagged_data_object.Array" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Array",
                  "0001_NASA_PDS_1.pds.Array_1D",
                  "0001_NASA_PDS_1.pds.Array_2D",
                  "0001_NASA_PDS_1.pds.Array_2D_Image",
                  "0001_NASA_PDS_1.pds.Array_2D_Map",
                  "0001_NASA_PDS_1.pds.Array_2D_Spectrum",
                  "0001_NASA_PDS_1.pds.Array_3D",
                  "0001_NASA_PDS_1.pds.Array_3D_Image",
                  "0001_NASA_PDS_1.pds.Array_3D_Movie",
                  "0001_NASA_PDS_1.pds.Array_3D_Spectrum",
                  "0001_NASA_PDS_1.pds.Encoded_Audio",
                  "0001_NASA_PDS_1.pds.Encoded_Header",
                  "0001_NASA_PDS_1.pds.Encoded_Image",
                  "0001_NASA_PDS_1.pds.Header",
                  "0001_NASA_PDS_1.pds.Stream_Text",
                  "0001_NASA_PDS_1.pds.Table_Binary",
                  "0001_NASA_PDS_1.pds.Table_Character",
                  "0001_NASA_PDS_1.pds.Table_Delimited"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Checksum_Manifest" ,
            "title": "File_Area_Checksum_Manifest" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Checksum Manifest class describes a file that contains a two column table for file references and checksums."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Checksum_Manifest.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Checksum_Manifest.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Checksum_Manifest.pds.has_tagged_data_object.Checksum_Manifest" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Checksum_Manifest"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Encoded_Image" ,
            "title": "File_Area_Encoded_Image" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Encoded Image class describes a file that contains an Encoded Image object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Encoded_Image.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Encoded_Image.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Encoded_Image.pds.has_tagged_data_object.Encoded_Image" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Encoded_Image"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_External" ,
            "title": "File_Area_External" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area External class describes a file and one or more tagged_data_objects contained within the file."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_External.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_External.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_External.pds.has_tagged_data_object.Encoded_External" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Encoded_External"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Inventory" ,
            "title": "File_Area_Inventory" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Inventory class describes a file and an inventory consisting of references to  members."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Inventory.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Inventory.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Inventory.pds.has_tagged_data_object.Inventory" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Inventory"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Metadata" ,
            "title": "File_Area_Metadata" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Metadata class describes a table which provides new, and\/or improved, metadata. All field names provided must be attributes defined in PDS4, either in the common dictionary, or in a PDS4 discipline or mission dictionary."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Metadata.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Metadata.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Metadata.pds.has_tagged_data_object2.Header" ,
                "title": "has_tagged_data_object2" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Header"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Metadata.pds.has_tagged_data_object.Table_Character" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Table_Character",
                  "0001_NASA_PDS_1.pds.Table_Delimited"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Native" ,
            "title": "File_Area_Native" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Native describes tagged_data_objects collected from an instrument."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Native.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Native.pds.has_tagged_data_object.Encoded_Native" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Encoded_Native"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Native.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational" ,
            "title": "File_Area_Observational" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Observational class describes, for an observational product, a file and one or more tagged_data_objects contained within the file."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational.pds.has_composite_structure.Composite_Structure" ,
                "title": "has_composite_structure" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Composite_Structure"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational.pds.has_tagged_data_object.Array" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Array",
                  "0001_NASA_PDS_1.pds.Array_1D",
                  "0001_NASA_PDS_1.pds.Array_2D",
                  "0001_NASA_PDS_1.pds.Array_2D_Image",
                  "0001_NASA_PDS_1.pds.Array_2D_Map",
                  "0001_NASA_PDS_1.pds.Array_2D_Spectrum",
                  "0001_NASA_PDS_1.pds.Array_3D",
                  "0001_NASA_PDS_1.pds.Array_3D_Image",
                  "0001_NASA_PDS_1.pds.Array_3D_Movie",
                  "0001_NASA_PDS_1.pds.Array_3D_Spectrum",
                  "0001_NASA_PDS_1.pds.Encoded_Header",
                  "0001_NASA_PDS_1.pds.Header",
                  "0001_NASA_PDS_1.pds.Stream_Text",
                  "0001_NASA_PDS_1.pds.Table_Binary",
                  "0001_NASA_PDS_1.pds.Table_Character",
                  "0001_NASA_PDS_1.pds.Table_Delimited",
                  "0001_NASA_PDS_1.pds.Encoded_Audio",
                  "0001_NASA_PDS_1.pds.Encoded_Video"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational_Supplemental" ,
            "title": "File_Area_Observational_Supplemental" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Observational Supplemental class describes, for an observational product, additional files and tagged_data_objects contained within the file."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational_Supplemental.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational_Supplemental.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational_Supplemental.pds.has_composite_structure.Composite_Structure" ,
                "title": "has_composite_structure" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Composite_Structure"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Observational_Supplemental.pds.has_tagged_data_object.Array" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Array",
                  "0001_NASA_PDS_1.pds.Array_1D",
                  "0001_NASA_PDS_1.pds.Array_2D",
                  "0001_NASA_PDS_1.pds.Array_2D_Image",
                  "0001_NASA_PDS_1.pds.Array_2D_Map",
                  "0001_NASA_PDS_1.pds.Array_2D_Spectrum",
                  "0001_NASA_PDS_1.pds.Array_3D",
                  "0001_NASA_PDS_1.pds.Array_3D_Image",
                  "0001_NASA_PDS_1.pds.Array_3D_Movie",
                  "0001_NASA_PDS_1.pds.Array_3D_Spectrum",
                  "0001_NASA_PDS_1.pds.Encoded_Binary",
                  "0001_NASA_PDS_1.pds.Encoded_Byte_Stream",
                  "0001_NASA_PDS_1.pds.Encoded_Header",
                  "0001_NASA_PDS_1.pds.Encoded_Image",
                  "0001_NASA_PDS_1.pds.Header",
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream",
                  "0001_NASA_PDS_1.pds.Stream_Text",
                  "0001_NASA_PDS_1.pds.Table_Binary",
                  "0001_NASA_PDS_1.pds.Table_Character",
                  "0001_NASA_PDS_1.pds.Table_Delimited",
                  "0001_NASA_PDS_1.pds.Encoded_Audio",
                  "0001_NASA_PDS_1.pds.Encoded_Video",
                  "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_External",
                  "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_Internal"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_SIP_Deep_Archive" ,
            "title": "File_Area_SIP_Deep_Archive" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area SIP Deep Archive class describes the File Area for the Submission Information Package (SIP) for the NASA planetary science deep archive."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_SIP_Deep_Archive.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_SIP_Deep_Archive.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_SIP_Deep_Archive.pds.has_tagged_data_object.Manifest_SIP_Deep_Archive" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Manifest_SIP_Deep_Archive"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_SPICE_Kernel" ,
            "title": "File_Area_SPICE_Kernel" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area SPICE Kernel class describes a file that contains a SPICE Kernel object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_SPICE_Kernel.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_SPICE_Kernel.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_SPICE_Kernel.pds.has_tagged_data_object.SPICE_Kernel" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.SPICE_Kernel"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Service_Description" ,
            "title": "File_Area_Service_Description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Service Description class describes a file that contains a service description."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Service_Description.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Service_Description.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Service_Description.pds.has_tagged_data_object.Service_Description" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Service_Description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Text" ,
            "title": "File_Area_Text" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Text class describes a file that contains a text stream object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Text.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Text.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Text.pds.has_tagged_data_object.Stream_Text" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Stream_Text"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Transfer_Manifest" ,
            "title": "File_Area_Transfer_Manifest" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area Transfer Manifest class describes a file that contains a two column table that maps the logical identifiers and version ids of products to their file specification names."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Transfer_Manifest.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Transfer_Manifest.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Transfer_Manifest.pds.has_tagged_data_object.Transfer_Manifest" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Transfer_Manifest"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_Update" ,
            "title": "File_Area_Update" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The File Area Update class is a File Area that describes a file that contains one or  more digital objects used to provide additional metadata for registered products."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Update.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Update.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Update.pds.has_tagged_data_object2.Header" ,
                "title": "has_tagged_data_object2" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Header"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_Update.pds.has_tagged_data_object.Table_Character" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Table_Character",
                  "0001_NASA_PDS_1.pds.Table_Delimited"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.File_Area_XML_Schema" ,
            "title": "File_Area_XML_Schema" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The File Area XML Schema class describes a file that contains a resource used for the PDS4 implementation into XML."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_XML_Schema.File_Area.generalization" ,
                "title": "File_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.File_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_XML_Schema.pds.has_File.File" ,
                "title": "has_File" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.File_Area_XML_Schema.pds.has_tagged_data_object.XML_Schema" ,
                "title": "has_tagged_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.XML_Schema"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Finding_Aid_Object" ,
            "title": "Finding_Aid_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Finding Aid Object defines a Supplemental Object that supports a user when attempting to locate data."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement" ,
            "title": "Funding_Acknowledgement" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Funding_Acknowledgement class cites a funding source which supported production of the archival data."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_source" ,
                "title": "funding_source" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_source"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_year" ,
                "title": "funding_year" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_year"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_award" ,
                "title": "funding_award" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_award"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_acknowledgement_text" ,
                "title": "funding_acknowledgement_text" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_acknowledgement_text"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Group" ,
            "title": "Group" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Group class defines a group of (repeating) fields and, possibly, (sub) groups; it is the parent class of all specific group classes."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1005" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.group_number" ,
                "title": "group_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.group_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.repetitions" ,
                "title": "repetitions" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.repetitions"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.fields" ,
                "title": "fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.groups" ,
                "title": "groups" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.groups"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Facet1" ,
            "title": "Group_Facet1" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Group_Facet1 class contains a single facet restricted according to the value of discipline_name. It also contains zero or more subfacets restricted according to the value of the facet. Note that Science_Facets was modeled with Discipline_Facets as a component and Discipline_Facets was modeled with Group_Facet1 and Group_Facet2 as components. This dependency hierarchy was flattened and only Science_Facets exists in the schema."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Facet1.pds.facet1" ,
                "title": "facet1" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group_Facet1.pds.facet1"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Facet1.pds.subfacet1" ,
                "title": "subfacet1" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group_Facet1.pds.subfacet1"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Facet2" ,
            "title": "Group_Facet2" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Group_Facet2 class contains a single facet restricted according to the value of discipline_name. It also contains zero or more subfacets restricted according to the value of the facet. Note that Science_Facets was modeled with Discipline_Facets as a component and Discipline_Facets was modeled with Group_Facet1 and Group_Facet2 as components. This dependency hierarchy was flattened and only Science_Facets exists in the schema."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Facet2.pds.facet2" ,
                "title": "facet2" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group_Facet2.pds.facet2"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Facet2.pds.subfacet2" ,
                "title": "subfacet2" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group_Facet2.pds.subfacet2"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Field_Binary" ,
            "title": "Group_Field_Binary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Group_Field_Binary class allows a group of table fields."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1005" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.group_number" ,
                "title": "group_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.group_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Field_Binary.pds.group_location" ,
                "title": "group_location" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group_Field_Binary.pds.group_location"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.repetitions" ,
                "title": "repetitions" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.repetitions"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Field_Binary.pds.group_length" ,
                "title": "group_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group_Field_Binary.pds.group_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.fields" ,
                "title": "fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.groups" ,
                "title": "groups" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.groups"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Field_Binary.pds.has_Group_Field_Binary.Field_Binary" ,
                "title": "has_Group_Field_Binary" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Binary",
                  "0001_NASA_PDS_1.pds.Group_Field_Binary"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Field_Character" ,
            "title": "Group_Field_Character" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Group_Field_Character class allows a group of table fields."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1005" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.group_number" ,
                "title": "group_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.group_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Field_Character.pds.group_location" ,
                "title": "group_location" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group_Field_Character.pds.group_location"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.repetitions" ,
                "title": "repetitions" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.repetitions"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Field_Character.pds.group_length" ,
                "title": "group_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group_Field_Character.pds.group_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.fields" ,
                "title": "fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.groups" ,
                "title": "groups" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.groups"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Field_Character.pds.has_Group_Field_Character.Field_Character" ,
                "title": "has_Group_Field_Character" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Character",
                  "0001_NASA_PDS_1.pds.Group_Field_Character"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Field_Delimited" ,
            "title": "Group_Field_Delimited" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Field_Group_Delimited class allows a group of delimited fields."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1005" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.group_number" ,
                "title": "group_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.group_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.repetitions" ,
                "title": "repetitions" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.repetitions"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.fields" ,
                "title": "fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.groups" ,
                "title": "groups" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.groups"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Group.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Group_Field_Delimited.pds.has_Delimited_Field_Grouped.Field_Delimited" ,
                "title": "has_Delimited_Field_Grouped" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited",
                  "0001_NASA_PDS_1.pds.Group_Field_Delimited"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Header" ,
            "title": "Header" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Header class describes a data object header."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Header.Parsable_Byte_Stream.generalization" ,
                "title": "Parsable_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Header.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Header.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Header.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Header.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.IEEE754LSBDouble" ,
            "title": "IEEE754LSBDouble" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "IEEE 754 LSB double precision floating point"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.IEEE754LSBSingle" ,
            "title": "IEEE754LSBSingle" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "IEEE 754 LSB single precision floating point"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.IEEE754MSBDouble" ,
            "title": "IEEE754MSBDouble" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "IEEE 754 MSB double precision floating point"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.IEEE754MSBSingle" ,
            "title": "IEEE754MSBSingle" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "IEEE 754 MSB single precision floating point"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Identification_Area" ,
            "title": "Identification_Area" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.4.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The identification area consists of attributes that identify and name an object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.logical_identifier" ,
                "title": "logical_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Identification_Area.pds.logical_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Identification_Area.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.title" ,
                "title": "title" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Identification_Area.pds.title"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.information_model_version" ,
                "title": "information_model_version" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Identification_Area.pds.information_model_version"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.product_class" ,
                "title": "product_class" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Identification_Area.pds.product_class"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.alias_list.Alias_List" ,
                "title": "alias_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Alias_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.citation_information.Citation_Information" ,
                "title": "citation_information" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1075" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Citation_Information"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.modification_history.Modification_History" ,
                "title": "modification_history" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Modification_History"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package" ,
            "title": "Information_Package" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Information Package class defines the Information Package as described in the OAIS Reference Model and is the parent class of all specific IP classes."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component" ,
            "title": "Information_Package_Component" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Information_Package_Component class associates a Bundle, Collections or Basic Products with Checksum and Storage Manifests."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.checksum_manifest_checksum" ,
                "title": "checksum_manifest_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component.pds.checksum_manifest_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.checksum_type" ,
                "title": "checksum_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component.pds.checksum_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.transfer_manifest_checksum" ,
                "title": "transfer_manifest_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component.pds.transfer_manifest_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.has_Checksum_Manifest.File_Area_Checksum_Manifest" ,
                "title": "has_Checksum_Manifest" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Checksum_Manifest"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.has_Transfer_Manifest.File_Area_Transfer_Manifest" ,
                "title": "has_Transfer_Manifest" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Transfer_Manifest"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive" ,
            "title": "Information_Package_Component_Deep_Archive" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Information Package Component Deep Archive class is an Information Package Component for the NASA planetary science deep archive."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.manifest_checksum" ,
                "title": "manifest_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.manifest_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.checksum_type" ,
                "title": "checksum_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.checksum_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.manifest_url" ,
                "title": "manifest_url" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.manifest_url"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.aip_lidvid" ,
                "title": "aip_lidvid" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1033" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.aip_lidvid"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.aip_label_checksum" ,
                "title": "aip_label_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1037" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.aip_label_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.has_manifest.File_Area_SIP_Deep_Archive" ,
                "title": "has_manifest" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_SIP_Deep_Archive"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD" ,
            "title": "Ingest_LDD" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Ingest_LDD class provides a form for collecting class and attribute definitions."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.ldd_version_id" ,
                "title": "ldd_version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.ldd_version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.dictionary_type" ,
                "title": "dictionary_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1025" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.dictionary_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.full_name" ,
                "title": "full_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.full_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.steward_id" ,
                "title": "steward_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.steward_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.external_property_maps_id" ,
                "title": "external_property_maps_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1055" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.external_property_maps_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.last_modification_date_time" ,
                "title": "last_modification_date_time" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Ingest_LDD.pds.last_modification_date_time"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.local_attribute.DD_Attribute" ,
                "title": "local_attribute" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1090" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.local_class.DD_Class" ,
                "title": "local_class" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1100" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Class"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.local_attribute_extended.DD_Attribute_Extended" ,
                "title": "local_attribute_extended" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1102" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Extended"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.local_class_extended.DD_Class_Extended" ,
                "title": "local_class_extended" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1104" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Extended"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.local_rule.DD_Rule" ,
                "title": "local_rule" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1110" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.has_Property_Maps.Property_Maps" ,
                "title": "has_Property_Maps" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1120" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Property_Maps"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument" ,
            "title": "Instrument" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Instrument class provides a description of a physical object that collects data."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.subtype" ,
                "title": "subtype" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1025" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument.pds.subtype"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.model_id" ,
                "title": "model_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument.pds.model_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.naif_instrument_id" ,
                "title": "naif_instrument_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument.pds.naif_instrument_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.serial_number" ,
                "title": "serial_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument.pds.serial_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.has_type_list_area.Type_List_Area" ,
                "title": "has_type_list_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Type_List_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.data_object.Physical_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Physical_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host" ,
            "title": "Instrument_Host" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Instrument Host class provides a description of the physical object upon which an instrument is mounted."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument_Host.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.instrument_host_version_id" ,
                "title": "instrument_host_version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument_Host.pds.instrument_host_version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument_Host.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument_Host.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.naif_host_id" ,
                "title": "naif_host_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument_Host.pds.naif_host_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.serial_number" ,
                "title": "serial_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument_Host.pds.serial_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Instrument_Host.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.data_object.Physical_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Physical_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Internal_Reference" ,
            "title": "Internal_Reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Internal_Reference class is used to cross-reference other products in PDS4-compliant registries of PDS and its recognized international partners."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Internal_Reference.pds.lid_reference" ,
                "title": "lid_reference" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice#1" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference.pds.lid_reference",
                  "0001_NASA_PDS_1.pds.Internal_Reference.pds.lidvid_reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Internal_Reference.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference.pds.reference_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Internal_Reference.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference.pds.comment"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Inventory" ,
            "title": "Inventory" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Inventory class defines the inventory for members of a collection."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Inventory.Table_Delimited.generalization" ,
                "title": "Table_Delimited" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Inventory.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Inventory.pds.reference_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter" ,
                "title": "field_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.uniformly_sampled.Uniformly_Sampled" ,
                "title": "uniformly_sampled" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.has_delimited_record.Record_Delimited" ,
                "title": "has_delimited_record" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Record_Delimited"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation" ,
            "title": "Investigation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A set of experiments and\/or observations with a clearly defined purpose."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Investigation.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Investigation.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.start_date" ,
                "title": "start_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Investigation.pds.start_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.stop_date" ,
                "title": "stop_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Investigation.pds.stop_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Investigation.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation_Area" ,
            "title": "Investigation_Area" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Investigation_Area class provides information about an investigation (mission, observing campaign or other coordinated, large-scale data collection effort)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation_Area.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Investigation_Area.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation_Area.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Investigation_Area.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Investigation_Area.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Reference" ,
            "title": "Local_ID_Reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Local_ID_Reference class defines a one directional relationship by referencing another description object in the label."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.id_reference_to" ,
                "title": "id_reference_to" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.id_reference_to"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.id_reference_type" ,
                "title": "id_reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.id_reference_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation" ,
            "title": "Local_ID_Relation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Local_ID_Relation class defines a one directional relationship between two description objects in the label."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_from" ,
                "title": "id_reference_from" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_from"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_to" ,
                "title": "id_reference_to" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_to"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_type" ,
                "title": "id_reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Local_Internal_Reference" ,
            "title": "Local_Internal_Reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Local Internal_Reference class is used to cross-reference other Description Objects in a PDS4 label."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.local_identifier_reference" ,
                "title": "local_identifier_reference" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.local_identifier_reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.local_reference_type" ,
                "title": "local_reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.local_reference_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Manifest_SIP_Deep_Archive" ,
            "title": "Manifest_SIP_Deep_Archive" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Manifest SIP Deep Archive class is a Table Delimited for the NASA planetary science deep archive's Submission Information Package (SIP)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Manifest_SIP_Deep_Archive.Table_Delimited.generalization" ,
                "title": "Table_Delimited" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter" ,
                "title": "field_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.uniformly_sampled.Uniformly_Sampled" ,
                "title": "uniformly_sampled" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.has_delimited_record.Record_Delimited" ,
                "title": "has_delimited_record" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Record_Delimited"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Mission_Area" ,
            "title": "Mission_Area" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The mission area allows the insertion of mission specific metadata."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Modification_Detail" ,
            "title": "Modification_Detail" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Modification_Detail class provides the details of one round of modification for the product.  The first, required, instance of this class documents the date the product was first registered."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Modification_Detail.pds.modification_date" ,
                "title": "modification_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Modification_Detail.pds.modification_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Modification_Detail.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Modification_Detail.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Modification_Detail.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Modification_Detail.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Modification_History" ,
            "title": "Modification_History" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Modification_History class tracks the history of changes made to the product once it enters the registry system."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Modification_History.pds.modification_detail.Modification_Detail" ,
                "title": "modification_detail" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Modification_Detail"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.NSSDC" ,
            "title": "NSSDC" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The NSSDC Information class provides identification information for data submitted to the NSSDC."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.NSSDC.pds.medium_type" ,
                "title": "medium_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.NSSDC.pds.medium_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.NSSDC.pds.nssdc_collection_id" ,
                "title": "nssdc_collection_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.NSSDC.pds.nssdc_collection_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Native_Object" ,
            "title": "Native_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Native Object defines a Digital Object in the original format returned by the spacecraft or experimental system when that format cannot be described using one of the PDS4 formats specified for observational data (tables or arrays)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Node" ,
            "title": "Node" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Node class provides a description of an entity that provides local governance within the federated Planetary Data System."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Node.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Node.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Node.pds.institution_name" ,
                "title": "institution_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Node.pds.institution_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Node.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Node.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Node.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics" ,
            "title": "Object_Statistics" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Object Statistics class provides a set of values that provide metrics about the object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.maximum" ,
                "title": "maximum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.maximum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.minimum" ,
                "title": "minimum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.minimum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.mean" ,
                "title": "mean" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.mean"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.standard_deviation" ,
                "title": "standard_deviation" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.standard_deviation"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.bit_mask" ,
                "title": "bit_mask" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.bit_mask"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.median" ,
                "title": "median" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.median"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.maximum_scaled_value" ,
                "title": "maximum_scaled_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.maximum_scaled_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.minimum_scaled_value" ,
                "title": "minimum_scaled_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.minimum_scaled_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Object_Statistics.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1120" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Observation_Area" ,
            "title": "Observation_Area" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The observation area consists of attributes that provide information about the circumstances under which the data were collected."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observation_Area.Context_Area.generalization" ,
                "title": "Context_Area" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Context_Area.pds.comment"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observation_Area.pds.has_time_coordinates.Time_Coordinates" ,
                "title": "has_time_coordinates" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Time_Coordinates"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observation_Area.pds.has_investigation_area.Investigation_Area" ,
                "title": "has_investigation_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Investigation_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_primary_result_description.Primary_Result_Summary" ,
                "title": "has_primary_result_description" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Primary_Result_Summary"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observation_Area.pds.has_observing_system.Observing_System" ,
                "title": "has_observing_system" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Observing_System"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observation_Area.pds.has_target_identification.Target_Identification" ,
                "title": "has_target_identification" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Target_Identification"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_mission_area.Mission_Area" ,
                "title": "has_mission_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Mission_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.has_discipline_area.Discipline_Area" ,
                "title": "has_discipline_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Discipline_Area"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Observational_Object" ,
            "title": "Observational_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Observational Object class defines a Digital Object produced by an observing system."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Observing_System" ,
            "title": "Observing_System" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Observing System class describes the entire suite used to collect the data."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Observing_System.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Observing_System.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System.pds.observing_system_component.Observing_System_Component" ,
                "title": "observing_system_component" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Observing_System_Component"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System.pds.data_object.Physical_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Physical_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component" ,
            "title": "Observing_System_Component" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Observing System Component class describes one or more subsystems used to collect data."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Observing_System_Component.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Observing_System_Component.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Observing_System_Component.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.external_reference.External_Reference" ,
                "title": "external_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.External_Reference"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Other" ,
            "title": "Other" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Other class provides a description of activities involved in the collection of data which are not otherwise modeled."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Other.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Other.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Other.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate" ,
            "title": "PDS_Affiliate" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The PDS Affiliate class provides a description of a person who has an association with the planetary science community and has access to PDS resources not normally allowed to the general public."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.registration_date" ,
                "title": "registration_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.registration_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.electronic_mail_address" ,
                "title": "electronic_mail_address" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.electronic_mail_address"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.sort_name" ,
                "title": "sort_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.sort_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.affiliation_type" ,
                "title": "affiliation_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.affiliation_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.alternate_telephone_number" ,
                "title": "alternate_telephone_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.alternate_telephone_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.institution_name" ,
                "title": "institution_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.institution_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.phone_book_flag" ,
                "title": "phone_book_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.phone_book_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.postal_address_text" ,
                "title": "postal_address_text" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.postal_address_text"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.team_name" ,
                "title": "team_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.team_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.telephone_number" ,
                "title": "telephone_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.telephone_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1120" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.data_object.Physical_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1130" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Physical_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Guest" ,
            "title": "PDS_Guest" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The PDS_Guest class is the default description of a person who has an association with the planetary science community and who has the most limited access to PDS resources."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Guest.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.registration_date" ,
                "title": "registration_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Guest.pds.registration_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.electronic_mail_address" ,
                "title": "electronic_mail_address" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Guest.pds.electronic_mail_address"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.sort_name" ,
                "title": "sort_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Guest.pds.sort_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.PDS_Guest.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.data_object.Physical_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Physical_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Packed_Data_Fields" ,
            "title": "Packed_Data_Fields" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Packed_Data_Fields class contains field definitions for extracting packed data from the associated byte string field."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Packed_Data_Fields.pds.bit_fields" ,
                "title": "bit_fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Packed_Data_Fields.pds.bit_fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Packed_Data_Fields.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Packed_Data_Fields.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Packed_Data_Fields.pds.has_Field_Bit.Field_Bit" ,
                "title": "has_Field_Bit" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Bit"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream" ,
            "title": "Parsable_Byte_Stream" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Parsable Byte Stream class defines byte streams that have standard parsing rules. The Parsable Byte Stream class is the parent class for all parsable byte streams."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Physical_Context_Object" ,
            "title": "Physical_Context_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Physical Context Object class defines a Phyiscal Object that is used to provide contextual information for an Observational Object."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Physical_Object" ,
            "title": "Physical_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Physical Object class defines a tangible object."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary" ,
            "title": "Primary_Result_Summary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "2.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Primary_Result_Summary class provides a high-level description of the types of products included in the collection or bundle"
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.purpose" ,
                "title": "purpose" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.purpose"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.data_regime" ,
                "title": "data_regime" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.data_regime"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.processing_level" ,
                "title": "processing_level" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.processing_level"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.processing_level_id" ,
                "title": "processing_level_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.processing_level_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.has_Science_Facet.Science_Facets" ,
                "title": "has_Science_Facet" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1070" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Science_Facets"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product" ,
            "title": "Product" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A Product is a uniquely identified object that is managed by a registry\/repository. It consists of one or more tagged data objects."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_AIP" ,
            "title": "Product_AIP" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product AIP class defines a product for the Archival Information Package."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_AIP.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_AIP.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_AIP.pds.has_Information_Package_Component.Information_Package_Component" ,
                "title": "has_Information_Package_Component" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_AIP.pds.product_data_object.Archival_Information_Package" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Archival_Information_Package"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Ancillary" ,
            "title": "Product_Ancillary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product_Ancillary class defines a product that contains data that are supplementary to observational data and cannot reasonably be associated with any other non-observational data class. Use of Product_Ancillary must be approved by the curating node."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Ancillary.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Ancillary.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Ancillary.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Ancillary.pds.file_area.File_Area_Ancillary" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Ancillary"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Attribute_Definition" ,
            "title": "Product_Attribute_Definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product Attribute Definition provides an attribute definition in XML encoding."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Attribute_Definition.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Attribute_Definition.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Attribute_Definition.pds.product_data_object.DD_Attribute_Full" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Attribute_Full"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Browse" ,
            "title": "Product_Browse" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product Browse class defines a product consisting of one  encoded byte stream digital object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Browse.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Browse.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1005" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Browse.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Browse.pds.file_area.File_Area_Browse" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Browse"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Bundle" ,
            "title": "Product_Bundle" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A Product_Bundle is an aggregate product and has a table of references to one or more collections."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Bundle.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Bundle.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Bundle.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Bundle.pds.product_data_object.Bundle" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Bundle"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Bundle.pds.file_area.File_Area_Text" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Text"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Bundle.pds.member_entry.Bundle_Member_Entry" ,
                "title": "member_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Bundle_Member_Entry"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Class_Definition" ,
            "title": "Product_Class_Definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product Class Definition provides a class definition in XML encoding."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Class_Definition.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Class_Definition.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Class_Definition.pds.product_data_object.DD_Class_Full" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DD_Class_Full"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Collection" ,
            "title": "Product_Collection" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A Product_Collection has a table of references to one or more basic products. The references are stored in a table called the inventory."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Collection.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Collection.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Collection.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Collection.pds.product_data_object.Collection" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Collection"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Collection.pds.file_area_inventory.File_Area_Inventory" ,
                "title": "file_area_inventory" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Inventory"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Components" ,
            "title": "Product_Components" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Product Component class is an abstract class for the components of the Product class."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Context" ,
            "title": "Product_Context" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product Context class describes something that provides context and provenance for an observational product."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Context.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Context.pds.has_discipline_area.Discipline_Area" ,
                "title": "has_discipline_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Discipline_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Context.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Context.pds.product_data_object.Agency" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Agency",
                  "0001_NASA_PDS_1.pds.Airborne",
                  "0001_NASA_PDS_1.pds.Facility",
                  "0001_NASA_PDS_1.pds.Instrument",
                  "0001_NASA_PDS_1.pds.Instrument_Host",
                  "0001_NASA_PDS_1.pds.Investigation",
                  "0001_NASA_PDS_1.pds.Node",
                  "0001_NASA_PDS_1.pds.Other",
                  "0001_NASA_PDS_1.pds.PDS_Affiliate",
                  "0001_NASA_PDS_1.pds.PDS_Guest",
                  "0001_NASA_PDS_1.pds.Resource",
                  "0001_NASA_PDS_1.pds.Target",
                  "0001_NASA_PDS_1.pds.Telescope"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_DIP" ,
            "title": "Product_DIP" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product DIP class defines a product for the Dissemination Information Package."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_DIP.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_DIP.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_DIP.pds.has_Information_Package_Component.Information_Package_Component" ,
                "title": "has_Information_Package_Component" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_DIP.pds.product_data_object.Dissemination_Information_Package" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Dissemination_Information_Package"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_DIP_Deep_Archive" ,
            "title": "Product_DIP_Deep_Archive" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product DIP_Deep_Archive class defines a product for the Dissemination Information Package for the deep archive."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_DIP_Deep_Archive.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_DIP_Deep_Archive.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_DIP_Deep_Archive.pds.has_Information_Package_Component.Information_Package_Component" ,
                "title": "has_Information_Package_Component" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_DIP_Deep_Archive.pds.product_data_object.DIP_Deep_Archive" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.DIP_Deep_Archive"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Document" ,
            "title": "Product_Document" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "2.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A Product Document is a product consisting of a single logical document that may comprise one or more document editions."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Document.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Document.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Document.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Document.pds.has_document.Document" ,
                "title": "has_document" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Document"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_External" ,
            "title": "Product_External" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product External class defines a product that does not reside within the PDS archives."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_External.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_External.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_External.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_External.pds.file_area.File_Area_External" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_External"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_File_Repository" ,
            "title": "Product_File_Repository" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product File Repository class consists of a single text file. This product is used to register a file in a repository."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_File_Repository.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_File_Repository.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_File_Repository.pds.file_area.File_Area_Binary" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Binary"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_File_Text" ,
            "title": "Product_File_Text" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product File Text consists of a single text file with ASCII character encoding."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_File_Text.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_File_Text.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_File_Text.pds.file_area.File_Area_Text" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Text"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Metadata_Supplemental" ,
            "title": "Product_Metadata_Supplemental" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product_Metadata_Supplemental class is used to provide new, and\/or improved, metadata for some or all of the basic products in a single collection. More than one Product_Metadata_Supplemental may apply to any given collection."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Metadata_Supplemental.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Metadata_Supplemental.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Metadata_Supplemental.pds.file_area.File_Area_Metadata" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Metadata"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Native" ,
            "title": "Product_Native" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Product_Native is used to describe digital objects in the original format returned by the spacecraft or experimental system when that format  cannot be described using one of the PDS4 formats specified for observational data (tables or arrays,  excluding Array_1D)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Native.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Native.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Native.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Native.pds.file_area.File_Area_Native" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Native"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Observational" ,
            "title": "Product_Observational" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.7.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A Product_Observational is a set of one or more information objects produced by an observing system."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Observational.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Observational.pds.observation_area.Observation_Area" ,
                "title": "observation_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Observation_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Observational.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Observational.pds.file_area.File_Area_Observational" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Observational"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Observational.pds.file_area_supplemental.File_Area_Observational_Supplemental" ,
                "title": "file_area_supplemental" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Observational_Supplemental"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_SIP" ,
            "title": "Product_SIP" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product SIP class defines a product for the Submission Information Package."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SIP.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SIP.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SIP.pds.has_Information_Package_Component.Information_Package_Component" ,
                "title": "has_Information_Package_Component" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SIP.pds.product_data_object.Submission_Information_Package" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Submission_Information_Package"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_SIP_Deep_Archive" ,
            "title": "Product_SIP_Deep_Archive" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product SIP Deep Archive class defines a Submission Information Package (SIP) for the NASA planetary science deep archive."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SIP_Deep_Archive.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SIP_Deep_Archive.pds.has_Information_Package_Component.Information_Package_Component_Deep_Archive" ,
                "title": "has_Information_Package_Component" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SIP_Deep_Archive.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SIP_Deep_Archive.pds.product_data_object.SIP_Deep_Archive" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.SIP_Deep_Archive"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_SPICE_Kernel" ,
            "title": "Product_SPICE_Kernel" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product SPICE Kernel class defines a SPICE kernel product."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SPICE_Kernel.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SPICE_Kernel.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SPICE_Kernel.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_SPICE_Kernel.pds.file_area.File_Area_SPICE_Kernel" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_SPICE_Kernel"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Service" ,
            "title": "Product_Service" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product Service class defines a product for registering services. Service descriptions from this product are used to register services as intrinsic registry objects."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Service.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Service.pds.product_data_object.Service" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Service"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Service.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Service.pds.file_area.File_Area_Service_Description" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Service_Description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Software" ,
            "title": "Product_Software" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Product Software is a product consisting of a set of one or more software formats."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Software.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Software.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Software.pds.product_description.Software" ,
                "title": "product_description" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Software"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Software.pds.software_format_set.Software_Binary" ,
                "title": "software_format_set" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Software_Binary"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Software.pds.software_format_set.Software_Script" ,
                "title": "software_format_set" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Software_Script"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Software.pds.software_format_set.Software_Source" ,
                "title": "software_format_set" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Software_Source"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Thumbnail" ,
            "title": "Product_Thumbnail" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product Thumbnail class defines a product consisting of one encoded byte stream digital object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Thumbnail.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Thumbnail.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Thumbnail.pds.file_area.File_Area_Encoded_Image" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Encoded_Image"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Update" ,
            "title": "Product_Update" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Product Update class defines a product consisting of update information and optional references to other products."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Update.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Update.pds.product_data_object.Update" ,
                "title": "product_data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Update"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Update.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Update.pds.file_area.File_Area_Update" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_Update"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_XML_Schema" ,
            "title": "Product_XML_Schema" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product_XML_Schema  describes a resource used for the PDS4 implementation into XML."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_XML_Schema.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_XML_Schema.pds.context_area.Context_Area" ,
                "title": "context_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1005" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Context_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_XML_Schema.pds.reference_list.Reference_List" ,
                "title": "reference_list" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Reference_List"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_XML_Schema.pds.file_area.File_Area_XML_Schema" ,
                "title": "file_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File_Area_XML_Schema"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Product_Zipped" ,
            "title": "Product_Zipped" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Product_Zipped  is a product with references to other products. The referenced products and all associated products and files are packaged into a single ZIP file."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Zipped.Product.generalization" ,
                "title": "Product" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Product"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product.pds.has_identification_area.Identification_Area" ,
                "title": "has_identification_area" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Identification_Area"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Zipped.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Zipped.pds.has_zip.Zip" ,
                "title": "has_zip" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Zip"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Product_Zipped.pds.file.File" ,
                "title": "file" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.File"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map" ,
            "title": "Property_Map" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Property Map class defines a table consisting of a set of data elements and their values. The data elements in this table are considered to be locally defined and not subject to standards except for nomenclature rules."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.identifier" ,
                "title": "identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map.pds.identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.title" ,
                "title": "title" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map.pds.title"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.model_object_id" ,
                "title": "model_object_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map.pds.model_object_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.model_object_type" ,
                "title": "model_object_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map.pds.model_object_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.instance_id" ,
                "title": "instance_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map.pds.instance_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.external_namespace_id" ,
                "title": "external_namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1065" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map.pds.external_namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.has_Property_Map_Entry.Property_Map_Entry" ,
                "title": "has_Property_Map_Entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Property_Map_Entry"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry" ,
            "title": "Property_Map_Entry" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The property map entry consists of a property name and one or more values."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_map_type" ,
                "title": "property_map_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1005" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_map_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_map_subtype" ,
                "title": "property_map_subtype" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1007" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_map_subtype"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_name" ,
                "title": "property_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_value" ,
                "title": "property_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_value"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Maps" ,
            "title": "Property_Maps" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Property Maps class defines a collection of one or more related Property Maps."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.identifier" ,
                "title": "identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Maps.pds.identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.title" ,
                "title": "title" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Maps.pds.title"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Maps.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Maps.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.external_property_map_id" ,
                "title": "external_property_map_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1055" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Property_Maps.pds.external_property_map_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.has_property_map.Property_Map" ,
                "title": "has_property_map" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Property_Map"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion" ,
            "title": "Quaternion" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Quaternion class models a mathematical construct that consists of four individual numeric components.  Quaternions are a convenient mechanism for encapsulating orientation information since they require only four units of numeric storage, as opposed to the nine needed for a rotation matrix."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.quaternion_component.Quaternion_Component" ,
                "title": "quaternion_component" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "4" ,
                "maximumCardinality": "4" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Quaternion_Component"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component" ,
            "title": "Quaternion_Component" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Quaternion_Component class provides a component of a quaternion."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion_Component.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.data_type" ,
                "title": "data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion_Component.pds.data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.value" ,
                "title": "value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion_Component.pds.value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.sequence_number" ,
                "title": "sequence_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion_Component.pds.sequence_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Quaternion_Component.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Record" ,
            "title": "Record" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Record class defines a record of a file and is the parent class of all specific record classes."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record.pds.fields" ,
                "title": "fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record.pds.fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record.pds.groups" ,
                "title": "groups" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record.pds.groups"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Record_Binary" ,
            "title": "Record_Binary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Record_Binary class is a component of the table class and defines a record of the table."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record.pds.fields" ,
                "title": "fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record.pds.fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record_Binary.pds.record_length" ,
                "title": "record_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record_Binary.pds.record_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record.pds.groups" ,
                "title": "groups" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record.pds.groups"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record_Binary.pds.has_Table_Field.Field_Binary" ,
                "title": "has_Table_Field" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Binary",
                  "0001_NASA_PDS_1.pds.Group_Field_Binary"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Record_Character" ,
            "title": "Record_Character" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Record_Character class is a component of the table class and defines a record of the table."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record.pds.fields" ,
                "title": "fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record.pds.fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record_Character.pds.record_length" ,
                "title": "record_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record_Character.pds.record_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record.pds.groups" ,
                "title": "groups" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record.pds.groups"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record_Character.pds.has_Character_Field.Field_Character" ,
                "title": "has_Character_Field" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Character",
                  "0001_NASA_PDS_1.pds.Group_Field_Character"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Record_Delimited" ,
            "title": "Record_Delimited" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Record_Delimited class is a component of the delimited table (spreadsheet) class and defines a record of the delimited table."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record.pds.fields" ,
                "title": "fields" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record.pds.fields"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record_Delimited.pds.maximum_record_length" ,
                "title": "maximum_record_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record_Delimited.pds.maximum_record_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record.pds.groups" ,
                "title": "groups" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Record.pds.groups"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Record_Delimited.pds.has_Delimited_Field.Field_Delimited" ,
                "title": "has_Delimited_Field" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "true" ,
                "isAny": "false" ,
                "groupName": "XSChoice%23" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Field_Delimited",
                  "0001_NASA_PDS_1.pds.Group_Field_Delimited"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Reference_List" ,
            "title": "Reference_List" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Reference_List class provides general references, cross-references, and source products for the product. References cited elsewhere in the label need not be repeated here."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Reference_List.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Reference_List.pds.external_reference.External_Reference" ,
                "title": "external_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.External_Reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Reference_List.pds.source_product_internal.Source_Product_Internal" ,
                "title": "source_product_internal" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Source_Product_Internal"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Reference_List.pds.source_product_external.Source_Product_External" ,
                "title": "source_product_external" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Source_Product_External"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Resource" ,
            "title": "Resource" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Resource class provides a description of a web resource."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Resource.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Resource.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Resource.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Resource.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Resource.pds.url" ,
                "title": "url" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Resource.pds.url"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Resource.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Resource.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Resource.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SIP_Deep_Archive" ,
            "title": "SIP_Deep_Archive" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The SIP Deep Archive class is a Submission Information Package (SIP)  for the NASA planetary science deep archive."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.SIP_Deep_Archive.pds.provider_site_id" ,
                "title": "provider_site_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1009" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.SIP_Deep_Archive.pds.provider_site_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel" ,
            "title": "SPICE_Kernel" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The SPICE Kernel class describes a SPICE object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel.Parsable_Byte_Stream.generalization" ,
                "title": "Parsable_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.kernel_type" ,
                "title": "kernel_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.kernel_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.encoding_type" ,
                "title": "encoding_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.encoding_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel_Object" ,
            "title": "SPICE_Kernel_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The SPICE Kernel Object defines a Supplemental Object that provides navigation ancillary information."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Science_Facets" ,
            "title": "Science_Facets" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Science_Facets class contains the science-related search facets.  It is optional and may be repeated if an product has facets related to, for example, two different disciplines (as defined by the discipline_name facet). Note that Science_Facets was modeled with Discipline_Facets as a component and Discipline_Facets was modeled with Group_Facet1 and Group_Facet2 as components. This dependency hierarchy was flattened and only Science_Facets exists in the schema."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Science_Facets.pds.wavelength_range" ,
                "title": "wavelength_range" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Science_Facets.pds.wavelength_range"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Science_Facets.pds.domain" ,
                "title": "domain" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Science_Facets.pds.domain"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Science_Facets.pds.has_Discipline_Facets.Discipline_Facets" ,
                "title": "has_Discipline_Facets" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Discipline_Facets"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Service" ,
            "title": "Service" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Service class provides a description of a web service or tool."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.abstract_desc" ,
                "title": "abstract_desc" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.abstract_desc"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.url" ,
                "title": "url" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.url"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.release_date" ,
                "title": "release_date" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.release_date"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.service_type" ,
                "title": "service_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.service_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.interface_type" ,
                "title": "interface_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.interface_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.category" ,
                "title": "category" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1075" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.category"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.software_language" ,
                "title": "software_language" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.software_language"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.supported_operating_system_note" ,
                "title": "supported_operating_system_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.supported_operating_system_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.system_requirements_note" ,
                "title": "system_requirements_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.system_requirements_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Service_Description" ,
            "title": "Service_Description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Service Description class defines a file that contains a standardized service specification."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service_Description.Parsable_Byte_Stream.generalization" ,
                "title": "Parsable_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Service_Description.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Service_Description.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SignedBitString" ,
            "title": "SignedBitString" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Signed Bit String"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SignedByte" ,
            "title": "SignedByte" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Signed 8-bit byte"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SignedLSB2" ,
            "title": "SignedLSB2" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Signed 2's-complement LSB 2-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SignedLSB4" ,
            "title": "SignedLSB4" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Signed 2's-complement LSB 4-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SignedLSB8" ,
            "title": "SignedLSB8" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Signed 2's-complement LSB 8-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SignedMSB2" ,
            "title": "SignedMSB2" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Signed 2's-complement MSB 2-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SignedMSB4" ,
            "title": "SignedMSB4" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Signed 2's-complement MSB 4-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.SignedMSB8" ,
            "title": "SignedMSB8" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Signed 2's-complement MSB 8-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Software" ,
            "title": "Software" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Software class describes a software product"
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.software_version_id" ,
                "title": "software_version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.software_version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.version_id" ,
                "title": "version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.author_list" ,
                "title": "author_list" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.author_list"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.programmers_manual_id" ,
                "title": "programmers_manual_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.programmers_manual_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.software_id" ,
                "title": "software_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.software_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.software_type" ,
                "title": "software_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.software_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.users_manual_id" ,
                "title": "users_manual_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.users_manual_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Binary" ,
            "title": "Software_Binary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Software Binary class provides a description of a software code that is stored as a compiled binary file."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.files" ,
                "title": "files" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Binary.pds.files"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.os_version" ,
                "title": "os_version" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Binary.pds.os_version"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.program_notes_id" ,
                "title": "program_notes_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Binary.pds.program_notes_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.software_format_type" ,
                "title": "software_format_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Binary.pds.software_format_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.supported_architecture_note" ,
                "title": "supported_architecture_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Binary.pds.supported_architecture_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.supported_operating_system_note" ,
                "title": "supported_operating_system_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Binary.pds.supported_operating_system_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.system_requirements_note" ,
                "title": "system_requirements_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Binary.pds.system_requirements_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Script" ,
            "title": "Software_Script" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Software Script class provides a description of a software code that is stored as a script."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.files" ,
                "title": "files" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Script.pds.files"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.install_note" ,
                "title": "install_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Script.pds.install_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.supported_environment_note" ,
                "title": "supported_environment_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Script.pds.supported_environment_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.system_requirements_note" ,
                "title": "system_requirements_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Script.pds.system_requirements_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source" ,
            "title": "Software_Source" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Software Source class provides a description of a software code that is stored as source code."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.compile_note" ,
                "title": "compile_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.compile_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.files" ,
                "title": "files" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.files"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.os_version" ,
                "title": "os_version" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.os_version"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.program_notes_id" ,
                "title": "program_notes_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.program_notes_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.software_dialect" ,
                "title": "software_dialect" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.software_dialect"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.software_format_type" ,
                "title": "software_format_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.software_format_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.software_language" ,
                "title": "software_language" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.software_language"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.supported_architecture_note" ,
                "title": "supported_architecture_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.supported_architecture_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.supported_operating_system_note" ,
                "title": "supported_operating_system_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.supported_operating_system_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.system_requirements_note" ,
                "title": "system_requirements_note" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Software_Source.pds.system_requirements_note"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_External" ,
            "title": "Source_Product_External" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Source_Product_External class is used to reference one or more source products (a product containing input data for the creation of this product) outside the PDS4 Registry that have a common reference_type, doi, curating facility, and\/or description. At least one of doi or curating facility must be provided. All source products listed within a single Source_Product_External class must correspond to the same doi and\/or curating facility."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.external_source_product_identifier" ,
                "title": "external_source_product_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Source_Product_External.pds.external_source_product_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Source_Product_External.pds.reference_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.doi" ,
                "title": "doi" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Source_Product_External.pds.doi"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.curating_facility" ,
                "title": "curating_facility" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Source_Product_External.pds.curating_facility"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Source_Product_External.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_Internal" ,
            "title": "Source_Product_Internal" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Source_Product _Internal class is used to reference one or more source products in the PDS4 registry system. A source product contains input data for the creation of this product."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.lidvid_reference" ,
                "title": "lidvid_reference" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.lidvid_reference"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.reference_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.comment" ,
                "title": "comment" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.comment"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants" ,
            "title": "Special_Constants" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Special Constants class provides a set of values used to indicate special cases that occur in the data."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.saturated_constant" ,
                "title": "saturated_constant" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.saturated_constant"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.missing_constant" ,
                "title": "missing_constant" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.missing_constant"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.error_constant" ,
                "title": "error_constant" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.error_constant"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.invalid_constant" ,
                "title": "invalid_constant" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.invalid_constant"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.unknown_constant" ,
                "title": "unknown_constant" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.unknown_constant"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.not_applicable_constant" ,
                "title": "not_applicable_constant" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.not_applicable_constant"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.valid_maximum" ,
                "title": "valid_maximum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.valid_maximum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.high_instrument_saturation" ,
                "title": "high_instrument_saturation" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.high_instrument_saturation"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.high_representation_saturation" ,
                "title": "high_representation_saturation" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1090" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.high_representation_saturation"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.valid_minimum" ,
                "title": "valid_minimum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1100" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.valid_minimum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.low_instrument_saturation" ,
                "title": "low_instrument_saturation" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1110" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.low_instrument_saturation"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.low_representation_saturation" ,
                "title": "low_representation_saturation" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1120" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Special_Constants.pds.low_representation_saturation"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Stream_Text" ,
            "title": "Stream_Text" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Stream text class defines a text object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Stream_Text.Parsable_Byte_Stream.generalization" ,
                "title": "Parsable_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Stream_Text.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Stream_Text.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Stream_Text.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Stream_Text.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Submission_Information_Package" ,
            "title": "Submission_Information_Package" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Submission Information Package (SIP) class is an Information Package that is delivered by a Data Provider to an archive that conforms to the Open Archive Information System (OAIS) Reference Model for use in the construction of one or more AIPs."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Information_Package.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Information_Package.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Supplemental_Object" ,
            "title": "Supplemental_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Supplemental Object defines a Digital Object that is supplementary to an Observational Object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Symbolic_Literals_PDS" ,
            "title": "Symbolic_Literals_PDS" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Symbolic_Literals_PDS class is used to collect orphan attributes for the pds namespace. These attributes are members by default of the USER class but not members of any domain class."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Symbolic_Literals_PDS.pds.nil_reason" ,
                "title": "nil_reason" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Symbolic_Literals_PDS.pds.nil_reason"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.TNDO_Context" ,
            "title": "TNDO_Context" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Tagged NonDigital Object (TNDO) Context class is an abstract class for the context class hierarchy."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.TNDO_Supplemental" ,
            "title": "TNDO_Supplemental" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Tagged NonDigital Object (TNDO) Supplemental class is an abstract class for the supplemental class hierarchy."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Base" ,
            "title": "Table_Base" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Table Base class defines a heterogeneous repeating record of scalars. The Table Base class is the parent class for all heterogeneous repeating record of scalars."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Binary" ,
            "title": "Table_Binary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Table Binary class is an extension of table base and defines a simple binary table."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Binary.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Binary.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Binary.pds.uniformly_sampled.Uniformly_Sampled" ,
                "title": "uniformly_sampled" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Binary.pds.has_Record.Record_Binary" ,
                "title": "has_Record" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Record_Binary"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Character" ,
            "title": "Table_Character" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Table Character class is an extension of table base and defines a simple character table."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Character.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Character.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Character.pds.uniformly_sampled.Uniformly_Sampled" ,
                "title": "uniformly_sampled" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Character.pds.has_Record.Record_Character" ,
                "title": "has_Record" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Record_Character"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited" ,
            "title": "Table_Delimited" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Table_Delimited class defines a simple table (spreadsheet) with delimited fields and records."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.Parsable_Byte_Stream.generalization" ,
                "title": "Parsable_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter" ,
                "title": "field_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.uniformly_sampled.Uniformly_Sampled" ,
                "title": "uniformly_sampled" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.has_delimited_record.Record_Delimited" ,
                "title": "has_delimited_record" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Record_Delimited"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_External" ,
            "title": "Table_Delimited_Source_Product_External" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Table_Delimited_Source_Product_External class defines a table that references many source products (products containing input data for the creation of this product) outside the PDS4 Registry that have a common reference_type, doi, curating facility, and\/or description. At least one of doi or curating facility must be provided for each source product."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_External.Table_Delimited.generalization" ,
                "title": "Table_Delimited" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter" ,
                "title": "field_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_External.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_External.pds.reference_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.uniformly_sampled.Uniformly_Sampled" ,
                "title": "uniformly_sampled" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.has_delimited_record.Record_Delimited" ,
                "title": "has_delimited_record" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Record_Delimited"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_Internal" ,
            "title": "Table_Delimited_Source_Product_Internal" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Table_Delimited_Source_Product_Internal class defines a table that references many source products (products containing input data for the creation of this product) in the PDS4 registry system. A source product contains input data for the creation of this product."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_Internal.Table_Delimited.generalization" ,
                "title": "Table_Delimited" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter" ,
                "title": "field_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_Internal.pds.reference_type" ,
                "title": "reference_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_Internal.pds.reference_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.uniformly_sampled.Uniformly_Sampled" ,
                "title": "uniformly_sampled" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.has_delimited_record.Record_Delimited" ,
                "title": "has_delimited_record" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Record_Delimited"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Child" ,
            "title": "Tagged_Digital_Child" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Tagged Digital Child class is an abstract class for the components  of classes in the tagged digital object class hierarchy."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object" ,
            "title": "Tagged_Digital_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Tagged Digital Object class is an abstract class for the digital class hierarchy. A tagged object is an information object."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Tagged_NonDigital_Child" ,
            "title": "Tagged_NonDigital_Child" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Tagged NonDigital Child class is an abstract class for the components  of classes in the tagged nondigital object class hierarchy."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Tagged_NonDigital_Object" ,
            "title": "Tagged_NonDigital_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Tagged NonDigital Object class is an abstract class for the physical and conceptual class hierarchy. A tagged object is an information object."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Target" ,
            "title": "Target" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Target class provides a description of a physical object that is the object of data collection."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Target.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Target.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Target.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target.pds.data_object.Physical_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Physical_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Target_Identification" ,
            "title": "Target_Identification" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.4.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Target_Identification class provides detailed target identification information."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Target_Identification.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.alternate_designation" ,
                "title": "alternate_designation" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Target_Identification.pds.alternate_designation"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Target_Identification.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Target_Identification.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Telescope" ,
            "title": "Telescope" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.3.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Telescope class provides coordinates and parameters for terrestrial, ground-based telescopes."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.aperture" ,
                "title": "aperture" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Telescope.pds.aperture"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.telescope_longitude" ,
                "title": "telescope_longitude" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Telescope.pds.telescope_longitude"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.telescope_latitude" ,
                "title": "telescope_latitude" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Telescope.pds.telescope_latitude"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.telescope_altitude" ,
                "title": "telescope_altitude" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1035" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Telescope.pds.telescope_altitude"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.altitude" ,
                "title": "altitude" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Telescope.pds.altitude"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.coordinate_source" ,
                "title": "coordinate_source" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Telescope.pds.coordinate_source"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Telescope.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.data_object.Physical_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Physical_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Term_Map_SKOS" ,
            "title": "Term_Map_SKOS" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "TheTerm_Map_SKOS class is used to collect a set of terms and definitions for a SKOS ontology."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Term_Map_SKOS.pds.Term_Map_SKOS_to_Term_Entry_SKOS.Terminological_Entry_SKOS" ,
                "title": "Term_Map_SKOS_to_Term_Entry_SKOS" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry" ,
            "title": "Terminological_Entry" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The terminological_entry class provides the name (designation) and definition of the attribute in a specified natural language."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.definition" ,
                "title": "definition" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry.pds.definition"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.language" ,
                "title": "language" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry.pds.language"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.preferred_flag" ,
                "title": "preferred_flag" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry.pds.preferred_flag"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.skos_relation_name" ,
                "title": "skos_relation_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry.pds.skos_relation_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.mapping_type" ,
                "title": "mapping_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1065" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry.pds.mapping_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.instance_id" ,
                "title": "instance_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry.pds.instance_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.source.External_Reference_Extended" ,
                "title": "source" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "*" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.External_Reference_Extended"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS" ,
            "title": "Terminological_Entry_SKOS" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The terminological_entry_SKOS class provides terms and definitions for a SKOS ontology."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.identifier" ,
                "title": "identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.registration_authority" ,
                "title": "registration_authority" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1011" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.registration_authority"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.namespace_id" ,
                "title": "namespace_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1012" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.namespace_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.steward_id" ,
                "title": "steward_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1014" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.steward_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.title" ,
                "title": "title" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.title"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.referenced_identifier" ,
                "title": "referenced_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1032" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.referenced_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.skos_relation_name" ,
                "title": "skos_relation_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1034" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.skos_relation_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.model_object_id" ,
                "title": "model_object_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.model_object_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.model_object_type" ,
                "title": "model_object_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.model_object_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.instance_id" ,
                "title": "instance_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.instance_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates" ,
            "title": "Time_Coordinates" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Time_Coordinates class provides a list of time coordinates."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.start_date_time" ,
                "title": "start_date_time" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Time_Coordinates.pds.start_date_time"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.stop_date_time" ,
                "title": "stop_date_time" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Time_Coordinates.pds.stop_date_time"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.local_mean_solar_time" ,
                "title": "local_mean_solar_time" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Time_Coordinates.pds.local_mean_solar_time"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.local_true_solar_time" ,
                "title": "local_true_solar_time" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Time_Coordinates.pds.local_true_solar_time"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.solar_longitude" ,
                "title": "solar_longitude" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Time_Coordinates.pds.solar_longitude"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Transfer_Manifest" ,
            "title": "Transfer_Manifest" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Transfer_Manifest class defines a table that maps product LIDVIDs to the file_specificaition_names of the products' XML label files."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Transfer_Manifest.Table_Character.generalization" ,
                "title": "Table_Character" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Character"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Character.pds.record_delimiter" ,
                "title": "record_delimiter" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Character.pds.record_delimiter"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.records" ,
                "title": "records" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.records"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Table_Base.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Character.pds.uniformly_sampled.Uniformly_Sampled" ,
                "title": "uniformly_sampled" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Table_Character.pds.has_Record.Record_Character" ,
                "title": "has_Record" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Record_Character"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Type_List_Area" ,
            "title": "Type_List_Area" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Type_List_Area allows the insertion of a Type List."
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "title": "UTF8_Short_String_Collapsed" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The UTF8_Short_String_Collapsed class indicates a limited length, whitespace-collapsed string constrained to the UTF-8 character encoding."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved" ,
            "title": "UTF8_Short_String_Preserved" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The UTF8_Short_String_Preserved class indicates a limited length, whitespace-preserved string constrained to the UTF-8 character encoding."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_String" ,
            "title": "UTF8_String" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The UTF8_String class indicates a limited length UTF8 text string with whitespaces removed."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_String.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_String.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_String.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_String.pds.xml_schema_base_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Collapsed" ,
            "title": "UTF8_Text_Collapsed" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The UTF8_Text_Collapsed class indicates an unlimited length, whitespace-collapsed text string constrained to the UTF-8 character encoding."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Collapsed.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Text_Collapsed.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Collapsed.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Text_Collapsed.pds.xml_schema_base_type"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "title": "UTF8_Text_Preserved" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The UTF8_Text_Preserved class indicates an unlimited length, whitespace-preserved text string constrained to the UTF-8 character encoding."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
                "title": "formation_rule" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
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                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.minimum_characters" ,
                "title": "minimum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.minimum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.maximum_characters" ,
                "title": "maximum_characters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.maximum_characters"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.minimum_value" ,
                "title": "minimum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.minimum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.maximum_value" ,
                "title": "maximum_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.maximum_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.character_constraint" ,
                "title": "character_constraint" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.character_constraint"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
                "title": "pattern" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "maximumCardinality": "1" ,
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                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.xml_schema_base_type" ,
                "title": "xml_schema_base_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "classOrder": "1060" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
                "title": "character_encoding" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "attributeId": [
                  "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled" ,
            "title": "Uniformly_Sampled" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Uniformly_Sampled class provides parameters for a uniformly sampled table."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_name" ,
                "title": "sampling_parameter_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "classOrder": "1010" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_interval" ,
                "title": "sampling_parameter_interval" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_unit" ,
                "title": "sampling_parameter_unit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_unit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.first_sampling_parameter_value" ,
                "title": "first_sampling_parameter_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.first_sampling_parameter_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.last_sampling_parameter_value" ,
                "title": "last_sampling_parameter_value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.last_sampling_parameter_value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_scale" ,
                "title": "sampling_parameter_scale" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
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                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_base" ,
                "title": "sampling_parameter_base" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_base"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameters" ,
                "title": "sampling_parameters" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
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                "classOrder": "1080" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameters"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Unit_Of_Measure" ,
            "title": "Unit_Of_Measure" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "true" ,
            "isDeprecated": "false" ,
            "description": "The Unit_Of_Measure is a definite magnitude of a quantity."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Acceleration" ,
            "title": "Units_of_Acceleration" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Acceleration is a magnitude of acceleration."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.type"
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              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance" ,
            "title": "Units_of_Amount_Of_Substance" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Amount_Of_Substance is a magnitude of mass."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance.pds.specified_unit_id"
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              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Angle" ,
            "title": "Units_of_Angle" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Angle is a magnitude of angle."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Angle.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
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              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Angle.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Angle.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Angle.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
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                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Angle.pds.unit_id"
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              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Angular_Velocity" ,
            "title": "Units_of_Angular_Velocity" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Angular_Velocity is a magnitude of speed of rotation."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Angular_Velocity.pds.type" ,
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                "isAttribute": "true" ,
                "isChoice": "false" ,
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              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Angular_Velocity.pds.specified_unit_id" ,
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                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
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                "classOrder": "1020" ,
                "attributeId": [
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              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Angular_Velocity.pds.unit_id" ,
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                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Angular_Velocity.pds.unit_id"
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              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Area" ,
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            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
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            "description": "Units_of_Area is a magnitude of area."
              , "associationList": [
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                "identifier": "0001_NASA_PDS_1.pds.Units_of_Area.pds.type" ,
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                "isChoice": "false" ,
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                "isChoice": "false" ,
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              }
            }
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                "identifier": "0001_NASA_PDS_1.pds.Units_of_Area.pds.unit_id" ,
                "title": "unit_id" ,
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                "attributeId": [
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              }
            }
           ]
          }
        }
      , {
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            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
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            "description": "Units_of_Current is a magnitude of current."
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            }
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            }
           ]
          }
        }
      , {
          "class": {
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            "description": "Units_of_Energy is a magnitude of energy."
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           , {"association": {
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              }
            }
           ]
          }
        }
      , {
          "class": {
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            "description": "Units_of_Force is a magnitude of force."
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           , {"association": {
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            }
           ]
          }
        }
      , {
          "class": {
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            }
           ]
          }
        }
      , {
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           ]
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      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Gmass" ,
            "title": "Units_of_Gmass" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Gmass is a product of the universal gravitational constant and the mass of one specified body"
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Length" ,
            "title": "Units_of_Length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Length is a magnitude of length."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Length.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Length.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Length.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Length.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Length.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Length.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Map_Scale" ,
            "title": "Units_of_Map_Scale" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "Units_of_Map_Scale is a proportional representation."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass" ,
            "title": "Units_of_Mass" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Mass is a magnitude of mass."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Mass.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Mass.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Mass.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass_Density" ,
            "title": "Units_of_Mass_Density" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Mass_Density is a magnitude of mass density."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Misc" ,
            "title": "Units_of_Misc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Misc provides an assortment of derived units."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Misc.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Misc.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Misc.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Misc.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Misc.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Misc.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_None" ,
            "title": "Units_of_None" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_None indicates that no unit of measure applies."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_None.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_None.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_None.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_None.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_None.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_None.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length" ,
            "title": "Units_of_Optical_Path_Length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Optical_Path_Length is a magnitude of optical path length."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular" ,
            "title": "Units_of_Pixel_Resolution_Angular" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The class Units_of_Pixel_Resolution_Angular provides the units in which pixel resolution is defined in an angular context. Angular pixel resolution, the inverse of angular pixel scale, indicates the angular size subtended by a single pixel (e.g., 6.5 deg\/pixel, 1.0 arcsec\/pixel)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear" ,
            "title": "Units_of_Pixel_Resolution_Linear" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The class Units_of_Pixel_Resolution_Linear provides the units in which pixel resolution is defined in an linear context. Linear pixel resolution, the inverse of linear pixel scale, indicates the linear size of a pixel typically expressed in terms of a length per single pixel (e.g., 6.5 m\/pixel, 1.0 km\/pixel)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map" ,
            "title": "Units_of_Pixel_Resolution_Map" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "cart" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The class Units_of_Pixel_Resolution_Map provides the units for pixel resolution in a cartographic context. Map pixel resolution indicates the size of a pixel in a digital map expressed in terms of surface distance per single pixel. This value is dependent on the definition of the map projection or radius to the object. (e.g., 6.5 m\/pixel, 1.0 km\/pixel) Note: In a cartographic context, degree is interpreted as a surface distance measured in degrees of latitude or longitude."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular" ,
            "title": "Units_of_Pixel_Scale_Angular" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The class Units_of_Pixel_Scale_Angular provides the units in which a pixel scale is defined in an angular context. Pixel scale, in terms of angular units, indicates the angular size of a pixel typically expressed as pixel per unit angle (e.g., 0.125 pixel\/deg , 0.5 pixel\/arcsec)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear" ,
            "title": "Units_of_Pixel_Scale_Linear" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The class Units_of_Pixel_Scale_Linear provides the units in which a pixel scale is defined in a linear context. Pixel scale, in terms of linear units, is the inverse distance represented by one pixel in an image, typically expressed as pixel per unit length (0.125 pixel\/m , 0.5 pixel\/km)."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map" ,
            "title": "Units_of_Pixel_Scale_Map" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "cart" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The class Units_of_Pixel_Scale_Map provides the units for pixel scale in a cartographic context. Map pixel scale is the inverse distance represented by one pixel in a digital map, expressed as pixel per unit length in terms of surface distance. For example, 4 pixel\/deg image on Venus = 4 pixel\/deg image on Mars = 1440x720 pixels. Note: In a cartographic context, degree is interpreted as a surface distance measured in degrees of latitude or longitude."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Power" ,
            "title": "Units_of_Power" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Power is a magnitude of power."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Power.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Power.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Power.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Power.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Power.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Power.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pressure" ,
            "title": "Units_of_Pressure" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Pressure is a magnitude of pressure."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Radiance" ,
            "title": "Units_of_Radiance" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.1.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Radiance is a magnitude of radiance."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Rates" ,
            "title": "Units_of_Rates" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Rate is a magnitude of change."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Rates.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Rates.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Rates.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Rates.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Rates.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Rates.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Solid_Angle" ,
            "title": "Units_of_Solid_Angle" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Solid_Angle is a magnitude of a solid angle."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance" ,
            "title": "Units_of_Spectral_Irradiance" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A measure of the power of radiation at a particular frequency or wavelength that passes through a unit area."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance" ,
            "title": "Units_of_Spectral_Radiance" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "A measure of the power of radiation at a particular frequency or wavelength that passes through a unit area and a unit solid angle in a specified direction."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "title": "Units_of_Storage" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Storage is an amount of computer storage."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Storage.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Storage.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Storage.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Storage.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Storage.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Storage.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Temperature" ,
            "title": "Units_of_Temperature" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Temperature is a magnitude of temperature."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Time" ,
            "title": "Units_of_Time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Time is a magnitude of time."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Time.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Time.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Time.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Time.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Time.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Time.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Velocity" ,
            "title": "Units_of_Velocity" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Velocity is a magnitude of velocity."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Voltage" ,
            "title": "Units_of_Voltage" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Voltage is a magnitude of voltage."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Volume" ,
            "title": "Units_of_Volume" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Volume is a magnitude of volume."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Volume.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Volume.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Volume.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Volume.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Volume.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Volume.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Wavenumber" ,
            "title": "Units_of_Wavenumber" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Units_of_Wavenumber is the number of waves that occur per unit distance, i.e., inverse length"
              , "associationList": [
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                "identifier": "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.type" ,
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                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
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                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.specified_unit_id" ,
                "title": "specified_unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.specified_unit_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.unit_id" ,
                "title": "unit_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.unit_id"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UnsignedBitString" ,
            "title": "UnsignedBitString" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Unsigned Bit String"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UnsignedByte" ,
            "title": "UnsignedByte" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Unsigned 8-bit byte"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UnsignedLSB2" ,
            "title": "UnsignedLSB2" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Unsigned 2's-complement LSB 2-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UnsignedLSB4" ,
            "title": "UnsignedLSB4" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Unsigned 2's-complement LSB 4-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UnsignedLSB8" ,
            "title": "UnsignedLSB8" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Unsigned 2's-complement LSB 8-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UnsignedMSB2" ,
            "title": "UnsignedMSB2" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Unsigned 2's-complement MSB 2-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UnsignedMSB4" ,
            "title": "UnsignedMSB4" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Unsigned 2's-complement MSB 4-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.UnsignedMSB8" ,
            "title": "UnsignedMSB8" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "Unsigned 2's-complement MSB 8-byte integer"
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Update" ,
            "title": "Update" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Update class consists of update information."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Update.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update.pds.update_purpose" ,
                "title": "update_purpose" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1015" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Update.pds.update_purpose"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Update.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update.pds.update_entry.Update_Entry" ,
                "title": "update_entry" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Update_Entry"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Update_Entry" ,
            "title": "Update_Entry" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Update Entry class provides the date and description of an update."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update_Entry.pds.date_time" ,
                "title": "date_time" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Update_Entry.pds.date_time"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update_Entry.pds.full_name" ,
                "title": "full_name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Update_Entry.pds.full_name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update_Entry.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Update_Entry.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Update_Entry.pds.internal_reference.Internal_Reference" ,
                "title": "internal_reference" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Internal_Reference"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Update_Object" ,
            "title": "Update_Object" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Update Object defines a Supplemental Object that is used to update an other Objects."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
                "title": "bit_string" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Vector" ,
            "title": "Vector" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Vector class provides the components of either a velocity or position vector."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.type" ,
                "title": "type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector.pds.type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.data_type" ,
                "title": "data_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector.pds.data_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.reference_frame_id" ,
                "title": "reference_frame_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector.pds.reference_frame_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.vector_components" ,
                "title": "vector_components" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1060" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector.pds.vector_components"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1070" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.data_object.Conceptual_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1080" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Conceptual_Object"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector.pds.vector_component.Vector_Component" ,
                "title": "vector_component" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "*" ,
                "classOrder": "1090" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Vector_Component"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3" ,
            "title": "Vector_Cartesian_3" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Vector_Cartesian_3_Base class is the parent class of 3 element Cartesian vectors."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id" ,
                "title": "reference_frame_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x" ,
                "title": "x" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y" ,
                "title": "y" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z" ,
                "title": "z" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3_Acceleration" ,
            "title": "Vector_Cartesian_3_Acceleration" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Vector_Cartesian_3_Acceleration class is a 3 element Cartesian vector for acceleration coordinates."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3_Acceleration.Vector_Cartesian_3.generalization" ,
                "title": "Vector_Cartesian_3" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id" ,
                "title": "reference_frame_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x" ,
                "title": "x" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y" ,
                "title": "y" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z" ,
                "title": "z" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3_Pointing" ,
            "title": "Vector_Cartesian_3_Pointing" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Vector_Cartesian_3_Pointing class is a 3 element normalized Cartesian vector for pointing."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3_Pointing.Vector_Cartesian_3.generalization" ,
                "title": "Vector_Cartesian_3" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id" ,
                "title": "reference_frame_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x" ,
                "title": "x" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y" ,
                "title": "y" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z" ,
                "title": "z" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3_Position" ,
            "title": "Vector_Cartesian_3_Position" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Vector_Cartesian_3_Position class is a 3 element Cartesian vector for position coordinates."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3_Position.Vector_Cartesian_3.generalization" ,
                "title": "Vector_Cartesian_3" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id" ,
                "title": "reference_frame_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x" ,
                "title": "x" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y" ,
                "title": "y" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z" ,
                "title": "z" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3_Velocity" ,
            "title": "Vector_Cartesian_3_Velocity" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Vector_Cartesian_3_Velocity class is a 3 element Cartesian vector for velocity coordinates."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3_Velocity.Vector_Cartesian_3.generalization" ,
                "title": "Vector_Cartesian_3" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id" ,
                "title": "reference_frame_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x" ,
                "title": "x" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y" ,
                "title": "y" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z" ,
                "title": "z" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Component" ,
            "title": "Vector_Component" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "true" ,
            "description": "The Vector_Component class provides a component of a vector."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Component.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.unit" ,
                "title": "unit" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Component.pds.unit"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.value" ,
                "title": "value" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Component.pds.value"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.sequence_number" ,
                "title": "sequence_number" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Component.pds.sequence_number"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1050" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Vector_Component.pds.description"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.XML_Schema" ,
            "title": "XML_Schema" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.2.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The XML Schema class defines a resource used for the PDS4 implementation into XML."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.XML_Schema.Parsable_Byte_Stream.generalization" ,
                "title": "Parsable_Byte_Stream" ,
                "assocType": "parent_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "0000" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream"
                 ]
              }
            } ,
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
                "title": "name" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.name"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
                "title": "offset" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.XML_Schema.pds.parsing_standard_id" ,
                "title": "parsing_standard_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.XML_Schema.pds.parsing_standard_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
                "title": "local_identifier" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
                "title": "object_length" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.XML_Schema.pds.ldd_version_id" ,
                "title": "ldd_version_id" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.XML_Schema.pds.ldd_version_id"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
                "title": "md5_checksum" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1030" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "0" ,
                "maximumCardinality": "1" ,
                "classOrder": "1040" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Tagged_Digital_Object.pds.data_object.Digital_Object" ,
                "title": "data_object" ,
                "assocType": "component_of" ,
                "isAttribute": "false" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "9999" ,
                "classId": [
                  "0001_NASA_PDS_1.pds.Digital_Object"
                 ]
              }
            }
           ]
          }
        }
      , {
          "class": {
            "identifier": "0001_NASA_PDS_1.pds.Zip" ,
            "title": "Zip" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.0.0.0" ,
            "isAbstract": "false" ,
            "isDeprecated": "false" ,
            "description": "The Zip class describes a zip file."
              , "associationList": [
             {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Zip.pds.container_type" ,
                "title": "container_type" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1010" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Zip.pds.container_type"
                 ]
              }
            }
           , {"association": {
                "identifier": "0001_NASA_PDS_1.pds.Zip.pds.description" ,
                "title": "description" ,
                "assocType": "attribute_of" ,
                "isAttribute": "true" ,
                "isChoice": "false" ,
                "isAny": "false" ,
                "groupName": "null" ,
                "minimumCardinality": "1" ,
                "maximumCardinality": "1" ,
                "classOrder": "1020" ,
                "attributeId": [
                  "0001_NASA_PDS_1.pds.Zip.pds.description"
                 ]
              }
            }
           ]
          }
        }
      ]
    , "attributeDictionary": [
        {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_AnyURI must be ASCII." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.character_encoding" ,
            "title": "character_encoding" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_encoding attribute identifies the standard that maps a set of allowed characters to their machine readable code." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "UTF-8" ,
                  "valueMeaning": "Values of ASCII_AnyURI have UTF-8 character encoding." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:anyURI" ,
                  "valueMeaning": "ASCII_AnyURI has an XML schema base type of xsd:anyURI" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_BibCode must be ASCII." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYYJJJJJVVVVMPPPPA" ,
                  "valueMeaning": "The ADS BibCode is expressed as a series of six character strings, consisting of the year of publication (YYYY), the identifier for the journal (JJJJJ), its volume number (VVVV), the type of journal (M), the page number (PPPP), and the last initial of the author (A). The format and its use are specified by the Astrophysics Data System (see http:\/\/adsabs.harvard.edu)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "[0-9]{4}[A-Za-z0-9&\\.]{5}[A-Za-z0-9\\.]{9}[A-Z\\.]" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_BibCode has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Boolean.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:boolean" ,
                  "valueMeaning": "ASCII_Boolean has an XML schema base type of xsd:boolean" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_DOI must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "10.ssss\/sss" ,
                  "valueMeaning": "The Digital Object Identifier (DOI) is expressed as the decimal number \"10.\" followed by a character string followed by a forward slash \"\/\" followed by another character string. The format and its use are specified by the International DOI Federation (see http:\/\/www.doi.org)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "10\\.\\S+\/\\S+" ,
                  "valueMeaning": "The Digital Object Identifier (DOI) is expressed as the decimal number \"10.\" followed by a character string followed by a forward slash \"\/\" followed by another character string.  The format and its use are specified by the International DOI Federation (see http:\/\/www.doi.org)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_DOI has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-MM-DD\/YYYY-DOY" ,
                  "valueMeaning": "The date must be expressed in either the YYYY-MM-DD or the YYYY-DOY format where YYYY is the 4-digit year (-9999 to 9999), MM is the 2-digit month (01-12), DD is the 2-digit day-of-month (01-31), and DOY is the 3-digit day-of-year (001-366)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date_DOY must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-DOY" ,
                  "valueMeaning": "The value must be expressed in the YYYY-DOY format where YYYY is the 4-digit year (-9999 to 9999) and DOY is the 3-digit day-of-year (001-366)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}(Z?)" ,
                  "valueMeaning": "See the respective formation rule for the value meaning." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date_DOY has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date_Time must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-MM-DDTHH:MM:SS.SSS(Z)\/YYYY-DOYTHH:MM:SS.SSS(Z)" ,
                  "valueMeaning": "The date must be expressed in either the YYYY-MM-DD or the YYYY-DOY format where YYYY is the 4-digit year (-9999 to 9999), MM is the 2-digit month-of-year (01-12), DD is the 2-digit day-of-month, and DOY is the 3-digit day-of-year (001-366). \"T\" is a delimiter separating date and time. Time must be expressed in the HH:MM:SS.SSS(Z) format where HH is the 2-digit hour (00-23), MM is the 2-digit minute (00-59), SS is the 2-digit integer second (00-60), SSS is milliseconds (000-999), and \"(Z)\" indicates that \"Z\" may be optionally appended to denote UTC." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:(([0-5][0-9])|60)(\\.([0-9]{1,4}))?(Z)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(T)(([0-1][0-9])|(2[0-4]))(Z)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(T)24:00((:00((\\.0+)?))?)(Z)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:(([0-5][0-9])|60)(\\.([0-9]{1,4}))?(Z)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(T)(([0-1][0-9])|(2[0-4]))(Z)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(T)24:00((:00((\\.0+)?))?)(Z)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date_Time has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date_Time_DOY must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-DOYTHH:MM:SS.SSSSSS(Z)" ,
                  "valueMeaning": "YYYY-DOYTHH:MM:SS.SSSSSS(Z) - The date must be expressed in the YYYY-DOY format where YYYY is the 4-digit year (-9999 to 9999) and DOY is the 3-digit day-of-year (001-366). \"T\" is a delimiter separating date and time. Time must be expressed in the HH:MM:SS.SSSSSS(Z) format where HH is the 2-digit hour (00-23), MM is the 2-digit minute (00-59), SS is the 2-digit integer second (00-60), SSSSSS is microseconds (000000-999999), and \"(Z)\" indicates that \"Z\" may be optionally appended to denote UTC." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(T)(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(T)(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}(Z?)" ,
                  "valueMeaning": "See the respective formation rule for the value meaning." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(T)(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(1971|1973|1974|1975|1977|1978|1979|1987|1989|1990|1995|1998|2005)-365T23:59:60(\\.[0-9]+)?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(1972|1976|2008|2016)-366T23:59:60(\\.[0-9]+)?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(1972|1992|2012)-182T23:59:60(\\.[0-9]+)?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(1981|1982|1983|1985|1993|1994|1997|2015)-181T23:59:60(\\.[0-9]+)?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date_Time_DOY has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date_Time_DOY_UTC must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-DOYTHH:MM:SS.SSSSSSZ" ,
                  "valueMeaning": "YYYY-DOYTHH:MM:SS.SSSSSSZ - The date must be expressed in the YYYY-DOY format where YYYY is the 4-digit year (-9999 to 9999) and DOY is the 3-digit day-of-year (001-366). \"T\" is a delimiter separating date and time. Time must be expressed in the HH:MM:SS.SSSSSSZ format where HH is the 2-digit hour (00-23), MM is the 2-digit minute (00-59), SS is the 2-digit integer second (00-60), SSSSSS is microseconds (000000-999999), and \"Z\" denotes UTC." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(T)(([0-1][0-9])|(2[0-3]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(T)(([0-1][0-9])|(2[0-3]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(T)(([0-1][0-9])|(2[0-3]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(1971|1973|1974|1975|1977|1978|1979|1987|1989|1990|1995|1998|2005)-365T23:59:60(\\.[0-9]+)?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(1972|1976|2008|2016)-366T23:59:60(\\.[0-9]+)?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(1972|1992|2012)-182T23:59:60(\\.[0-9]+)?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(1981|1982|1983|1985|1993|1994|1997|2015)-181T23:59:60(\\.[0-9]+)?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_DOY_UTC.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date_Time_DOY_UTC has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date_Time_UTC must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-MM-DDTHH:MM:SS.SSSZ\/YYYY-DOYTHH:MM:SS.SSSZ" ,
                  "valueMeaning": "The date must be expressed in either the YYYY-MM-DD or the YYYY-DOY format where YYYY is the 4-digit year (-9999 to 9999), MM is the 2-digit month-of-year (01-12), DD is the 2-digit day-of-month, and DOY is the 3-digit day-of-year (001-366). \"T\" is a delimiter separating date and time. Time must be expressed in the HH:MM:SS.SSS(Z) format where HH is the 2-digit hour (00-23), MM is the 2-digit minute (00-59), SS is the 2-digit integer second (00-60), SSS is milliseconds (000-999), and \"Z\" denotes that the combination is given in UTC." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:(([0-5][0-9])|60)(\\.([0-9]{1,4}))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(T)(([0-1][0-9])|(2[0-4]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(T)24:00((:00((\\.0+)?))?)(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:(([0-5][0-9])|60)(\\.([0-9]{1,4}))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(T)(([0-1][0-9])|(2[0-4]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(T)24:00((:00((\\.0+)?))?)(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_UTC.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date_Time_UTC has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date_Time_YMD must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-MM-DDTHH:MM:SS.SSSSSS(Z)" ,
                  "valueMeaning": "YYYY-MM-DDTHH:MM:SS.SSSSSS(Z) - The date must be expressed in the YYYY-MM-DD format where YYYY is the 4-digit year (-9999 to 9999), MM is the 2-digit month-of-year (01-12), DD is the 2-digit day-of-month, and DOY is the 3-digit day-of-year (001-366). \"T\" is a delimiter separating date and time. Time must be expressed in the HH:MM:SS.SSSSSS(Z) format where HH is the 2-digit hour (00-23), MM is the 2-digit minute (00-59), SS is the 2-digit integer second (00-60), SSSSSS is microseconds (000000-999999), and \"(Z)\" indicates that \"Z\" may be optionally appended to denote UTC." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "((1971|1972|1973|1974|1975|1976|1977|1978|1979|1987|1989|1990|1995|1998|2005|2008|2016)-12-31T23:59:60(\\.[0-9]+)?(Z?)|(1972|1981|1982|1983|1985|1992|1993|1994|1997|2012|2015)-06-30T23:59:60(\\.[0-9]+)?(Z?))" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(T)(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(T)(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}(Z?)" ,
                  "valueMeaning": "See the respective formation rule for the value meaning." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31)))(T)(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31)))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31)))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31)))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))(T)(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))(T)(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date_Time_YMD has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date_Time_YMD_UTC must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-MM-DDTHH:MM:SS.SSSSSSZ" ,
                  "valueMeaning": "YYYY-MM-DDTHH:MM:SS.SSSSSSZ - The date must be expressed in the YYYY-MM-DD format where YYYY is the 4-digit year (-9999 to 9999), MM is the 2-digit month-of-year (01-12), DD is the 2-digit day-of-month, and DOY is the 3-digit day-of-year (001-366). \"T\" is a delimiter separating date and time. Time must be expressed in the HH:MM:SS.SSSSSSZ format where HH is the 2-digit hour (00-23), MM is the 2-digit minute (00-59), SS is the 2-digit integer second (00-60), SSSSSS is microseconds (000000-999999), and \"Z\" denotes UTC." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "((1971|1972|1973|1974|1975|1976|1977|1978|1979|1987|1989|1990|1995|1998|2005|2008|2016)-12-31T23:59:60(\\.[0-9]+)?(Z)|(1972|1981|1982|1983|1985|1992|1993|1994|1997|2012|2015)-06-30T23:59:60(\\.[0-9]+)?(Z))" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(T)(([0-1][0-9])|(2[0-3]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(T)(([0-1][0-9])|(2[0-3]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31)))(T)(([0-1][0-9])|(2[0-3]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31)))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31)))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31)))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))(T)(([0-1][0-9])|(2[0-3]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))(T)(([0-1][0-9])|(2[0-3]))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))(T)(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))(Z)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date_Time_YMD_UTC has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Date_YMD must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "YYYY-MM-DD" ,
                  "valueMeaning": "The date must be expressed in the YYYY-MM-DD format where YYYY is the 4-digit year (-9999 to 9999), MM is the 2-digit month-of-year (01-12), and DD is the 2-digit day-of-month (01-31)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "((-)?[0-9]{4}-(02-((0[1-9])|(1[0-9])|(2[0-8])))|(-)?[0-9]{4}-((04|06|09|11)-((0[1-9])|([1-2][0-9])|30))|(-)?[0-9]{4}-((01|03|05|07|08|10|12)-((0[1-9])|([1-2][0-9])|(30|31))))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-02-29(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)-02-29)(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}(Z?)" ,
                  "valueMeaning": "See the respective formation rule for the value meaning." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_YMD.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Date_YMD has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Directory_Path_Name must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "dir1\/dir2\/" ,
                  "valueMeaning": "The path name to the directory must be given as the sequence of directories traversed between the current working directory and the target directory where each directory name is followed by the forward slash character (\"\/\"). See the PDS4 Standards Reference section \"File and Directory Naming\" for rules on forming directory names." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_Directory_Path_Name may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Directory_Path_Name must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Directory_Path_Name.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "ASCII_Directory_Path_Name has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_File_Name must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "file_name.file_extension" ,
                  "valueMeaning": "The file name is expressed as a base file name plus a file name extension separated by the ASCII period character (\".\"). Rules for forming file names are given in the PDS4 Standards Reference section \"File and Directory Naming\"." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_File_Name may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_File_Name must have at least one character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Name.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "ASCII_File_Name has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_File_Specification_Name must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "dir1\/dir2\/file_name.file_extension" ,
                  "valueMeaning": "The complete path name to the file is given as the sequence of directories traversed between the current working directory and the target directory where each directory name is followed by the forward slash character (\"\/\") plus the file name, which is expressed as a base file name plus a file name extension separated by the ASCII period character (\".\"). Rules for forming file and directory names are given in the PDS4 Standards Reference section \"File and Directory Naming\"." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_File_Specification_Name may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_File_Specification_Name must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_File_Specification_Name.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "ASCII_File_Specification_Name has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "9223372036854775807" ,
                  "valueMeaning": "The maximum value must be less than or equal to the equivalent integer value for 2^63-1" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "-9223372036854775808" ,
                  "valueMeaning": "The minimum value must be greater than or equal to the equivalent integer value of -2^63" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Integer.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:long" ,
                  "valueMeaning": "ASCII_Integer has an XML schema base type of xsd:long" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_LID must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "urn:xxx:yyy:zzzz" ,
                  "valueMeaning": "The logical identifier is formed by concatenating \"urn\", \"xxx\" (e.g., nasa), and \"yyy\" (e.g., pds) with an identifer (represented by \"zzzz\") chosen by the data provider. Colons separate the fields. Rules for forming logical identifiers are given in the PDS4 Standards Reference section \"Logical Indentifier\"." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_LID may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_LID must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LID.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_LID has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_LIDVID must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "urn:xxx:yyy:zzzz::M.n" ,
                  "valueMeaning": "A versioned identifier (LIDVID) is formed by appending a version identifier (VID) of the form M.n to a logical identifier (LID) of the form urn:xxx:yyy:zzzz. Rules for forming versioned identifiers are given in the PDS4 Standards Reference section \"Identifiers\"." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_LIDVID may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_LIDVID must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}::\\p{Nd}+\\.\\p{Nd}+" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_LIDVID has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_LIDVID_LID must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "urn:xxx:yyy:zzzz\/urn:xxx:yyy:zzzz::M.n" ,
                  "valueMeaning": "The value must be a logical identifier (LID) of the form urn:xxx:yyy:zzzz or a versioned identifier (LIDVID) of the form urn:xxx:yyy:zzzz::M.n. Rules for forming logical and versioned identifiers are given in the PDS4 Standards Reference section \"Identifiers\"." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_LIDVID_LID may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_LIDVID_LID must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}(::\\p{Nd}+\\.\\p{Nd}+)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_LIDVID_LID.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_LIDVID_LID has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Local_Identifier must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_Local_Identifier may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Local_Identifier must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:ID" ,
                  "valueMeaning": "ASCII_Local_Identifier has an XML schema base type of xsd:ID" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Local_Identifier_Reference must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_Local_Identifier_Reference may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Local_Identifier_Reference must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:IDREF" ,
                  "valueMeaning": "ASCII_Local_Identifier_Reference has an XML schema base type of xsd:IDREF" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_MD5_Checksum must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "0123456789abcdef" ,
                  "valueMeaning": "The value must be a character string of exactly 32 characters consisting of the digits 0-9 and the lower case letters a-f or upper case letters A-F (but not mixed case)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "32" ,
                  "valueMeaning": "Values of ASCII_MD5_Checksum may have no more than 32 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "32" ,
                  "valueMeaning": "Values of ASCII_MD5_Checksum must have at least 32 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "[0-9a-fA-F]{32}" ,
                  "valueMeaning": "See the respective formation rule for the value meaning." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_MD5_Checksum has an XML schema base type xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "18446744073709551615" ,
                  "valueMeaning": "The maximum value must be less than or equal to the equivalent integer value for 2^64-1" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "0" ,
                  "valueMeaning": "The minimum value must be greater than or equal to zero." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "[0-9]+" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:unsignedLong" ,
                  "valueMeaning": "ASCII_NonNegative_Integer has an XML schema base type of xsd:unsignedLong" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base16 may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base16 must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base16.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:hexBinary" ,
                  "valueMeaning": "ASCII_Numeric_Base16 has an XML schema base type of xsd:hexBinary" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base2 must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base2 may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base2 must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "[0-1]{1,255}" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base2 are constructed from 1-255 characters, each of which is either 0 or 1" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Numeric_Base2 has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base8 must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base8 may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base8 must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "[0-7]{1,255}" ,
                  "valueMeaning": "Values of ASCII_Numeric_Base8 are constructed from 1-255 characters, each of which is a digit in the range 0-7" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base8.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Numeric_Base8 has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1.7976931348623157e308" ,
                  "valueMeaning": "The maximum value must be less than or equal to the equivalent floating point value for (1 + (1 - 2**-52) * 2**1023" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "-1.7976931348623157e308" ,
                  "valueMeaning": "The minimum value must be less than or equal to the equivalent floating point value for -(1 + (1 - 2**-52) ) 2**1023" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "(\\+|-)?([0-9]+(\\.[0-9]*)?|\\.[0-9]+)([Ee](\\+|-)?[0-9]+)?" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "[^aFIN,]* " ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Real.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:double" ,
                  "valueMeaning": "ASCII_Real has an XML schema base type of xsd:double" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Short_String_Collapsed must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_Short_String_Collapsed may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Short_String_Collapsed must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "ASCII_Short_String_Collapsed has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Short_String_Preserved must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_Short_String_Preserved may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Short_String_Preserved must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Short_String_Preserved.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Short_String_Preserved has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_String must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_String must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "ASCII_String has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_String_Base_255 must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of ASCII_String_Base_255 may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_String_Base_255 must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_String_Base_255.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_String_Base_255 has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Text_Collapsed must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Text_Collapsed must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "ASCII_Text_Collapsed has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Text_Preserved must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of ASCII_Text_Preserved must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Text_Preserved has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_Time must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "HH:MM:SS.SSS" ,
                  "valueMeaning": "The time must be expressed in the HH:MM:SS.SSS format where HH is the 2-digit hour (00-23), MM is the 2-digit minute (00-59), SS is the 2-digit integer second (00-60), and SSS is milliseconds (000-999)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "(([0-1][0-9])|(2[0-3]))(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(([0-1][0-9])|(2[0-3])):[0-5][0-9](Z?)" ,
                  "valueMeaning": "See the respective formation rule for the value meaning." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(([0-1][0-9])|(2[0-3])):[0-5][0-9]:([0-5][0-9])(\\.([0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "(23):[0-5][0-9]:(([0-5][0-9])|60)((\\.[0-9]+))?(Z?)" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Time.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_Time has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII" ,
                  "valueMeaning": "Values of ASCII_VID must be ASCII" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "M.n" ,
                  "valueMeaning": "A version identifier (VID) has the form M.n where M denotes the major version and n denotes the minor version. Rules for forming version identifiers are given in the PDS4 Standards Reference section \"Identifiers\"." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "100" ,
                  "valueMeaning": "Values of ASCII_VID may have no more than 100 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "3" ,
                  "valueMeaning": "Values of ASCII_VID must have at least 3 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "0\\.([1-9]|([0-9][0-9]+))" ,
                  "valueMeaning": "See the respective formation rule for the value meaning." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "[1-9][0-9]*" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "[1-9][0-9]*\\.[0-9]+" ,
                  "valueMeaning": "null" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_VID.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "ASCII_VID has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Agency.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Agency.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the Agency is known." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "European Space Agency" ,
                  "valueMeaning": "The Agency has name European Space Agency" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Japan Aerospace Exploration Agency" ,
                  "valueMeaning": "The Agency has name Japan Aerospace Exploration Agency" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "National Aeronautics and Space Administration" ,
                  "valueMeaning": "The Agency has name National Aeronautics and Space Administration" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Roscosmos State Corporation for Space Activities" ,
                  "valueMeaning": "The Agency has name Roscosmos State Corporation for Space Activities" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Airborne.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Airborne.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Airborne.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Aircraft" ,
                  "valueMeaning": "An airborne observatory carried on a powered, heavier than air vessel supporting observations, measurements, and scientific experiments during flight." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Balloon" ,
                  "valueMeaning": "A balloon-borne observatory, typically consisting of a gondola structure carrying one or more telescopes and instruments, borne aloft by an unpowered or minimially powered lighter-than-atmosphere balloon for a limited observing period." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Suborbital Rocket" ,
                  "valueMeaning": "A Suborbital Rocket is an instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Alias.pds.alternate_id" ,
            "title": "alternate_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The alternate_id attribute provides an additional identifier supplied by the data provider." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Alias.pds.alternate_title" ,
            "title": "alternate_title" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The alternate _title attribute provides an alternate title for the product." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Alias.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Array.pds.axes" ,
            "title": "axes" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The axes attribute provides a count of the axes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "16" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Array.pds.axis_index_order" ,
            "title": "axis_index_order" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The axis_index_order attribute provides the axis index that varies fastest with respect to storage order." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Last Index Fastest" ,
                  "valueMeaning": "The values of a multi-dimensional array are stored in an order such that the last index changes fastest and the first index slowest." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Array.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Array.pds.offset" ,
            "title": "offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The offset attribute provides the displacement of the object starting position from the beginning of the parent structure (file, record, etc.).  If there is no displacement, offset=0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Array_1D.pds.axes" ,
            "title": "axes" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The axes attribute provides a count of the axes." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "16" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Array_1D has 1 axis" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Array_2D.pds.axes" ,
            "title": "axes" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The axes attribute provides a count of the axes." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "16" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "2" ,
                  "valueMeaning": "Array_2D has 2 axes" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Array_3D.pds.axes" ,
            "title": "axes" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The axes attribute provides a count of the axes." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "16" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "3" ,
                  "valueMeaning": "Array_3D has 3 axes" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.axis_name" ,
            "title": "axis_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The axis_name attribute provides a word or combination of words by which the axis is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.elements" ,
            "title": "elements" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The elements attribute provides the count of the number of elements along an array axis." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.sequence_number" ,
            "title": "sequence_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sequence_number attribute provides a number that is used to order axes in an array." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "16" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Axis_Array.pds.unit" ,
            "title": "unit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit attribute provides the unit of measurement." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.band_number" ,
            "title": "band_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The band_number attribute provides a number corresponding to the band in the spectral qube. The band number is equivalent to the instrument band number." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "512" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.band_width" ,
            "title": "band_width" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The band_width attributes provides the width, at half height, of the band." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "Units_of_Length" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Length" ,
            "unitId": "AU, Angstrom, cm, km, m, micrometer, mm, nm" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.center_wavelength" ,
            "title": "center_wavelength" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The center_wavelength attribute provides the wavelength or frequency describing the center of a bin along the band axis of a spectral qube. When describing data from a spectrometer, the value corresponds to the peak of the response function for a particular detector and\/or grating position." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "Units_of_Length" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Length" ,
            "unitId": "AU, Angstrom, cm, km, m, micrometer, mm, nm" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.detector_number" ,
            "title": "detector_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The detector_number attribute provides the spectrometer detector number corresponding to a band of a spectral qube. Detector numbers are usually assigned consecutively from 1, in order of increasing wavelength." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.filter_number" ,
            "title": "filter_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The filter_number attribute of a spectral qube describes the physical location of a band (identified by the band_number) in a detector array. Filter 1 is on the leading edge of the array." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.grating_position" ,
            "title": "grating_position" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The grating_position attribute of a spectral qube describes the grating position which corresponds to the band. Grating positions are usually assigned consecutively from 0, and increasing position causes increasing wavelength for each detector." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.original_band" ,
            "title": "original_band" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The original_band attribute of a spectral qube provides the sequence of band numbers in the qube relative to some original qube. In the original qube, the values are just consecutive integers beginning with 1. In a qube which contains a subset of the bands in the original qube, the values are the original sequence numbers from that qube." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "512" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.scaling_factor" ,
            "title": "scaling_factor" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The scaling_factor attribute is the scaling factor to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 1." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.standard_deviation" ,
            "title": "standard_deviation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The standard_deviation attribute provides the standard deviation of values in the associated object; empty and Special_Constants values are excluded." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Band_Bin.pds.value_offset" ,
            "title": "value_offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "img" ,
            "versionId": "1.20" ,
            "description": "The value_offset attribute is the offset to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Bundle.pds.bundle_type" ,
            "title": "bundle_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The bundle_type attribute provides a classification for the bundle." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Archive" ,
                  "valueMeaning": "The Bundle contains at least one data collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "External" ,
                  "valueMeaning": "The Bundle contains data collections that do not reside within the PDS archives." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Supplemental" ,
                  "valueMeaning": "The Bundle does not contain a data collection" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Bundle.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.lid_reference" ,
            "title": "lid_reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The lid_reference attribute provides the logical_identifier for a  product." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_LID" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_LID" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.lidvid_reference" ,
            "title": "lidvid_reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The lidvid_reference attribute provides the logical_identifier plus version_id, which uniquely identifies a product." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_LIDVID" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_LIDVID" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}::\\p{Nd}+\\.\\p{Nd}+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.member_status" ,
            "title": "member_status" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The member_status attribute indicates whether the collection is primary and whether the file_specification_name has been provided for the product_collection label." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Primary" ,
                  "valueMeaning": "The collection is a primary member of the bundle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Secondary" ,
                  "valueMeaning": "The collection is a secondary member of the bundle" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Bundle_Member_Entry.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "bundle_has_browse_collection" ,
                  "valueMeaning": "The bundle has a browse collection member" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_calibration_collection" ,
                  "valueMeaning": "The bundle has a calibration collection member" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_context_collection" ,
                  "valueMeaning": "The bundle has a context collection member" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_data_collection" ,
                  "valueMeaning": "The bundle has a data collection member" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_document_collection" ,
                  "valueMeaning": "The bundle has a document collection member" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_geometry_collection" ,
                  "valueMeaning": "The bundle has a geometry collection member" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_member_collection" ,
                  "valueMeaning": "*Deprecated* The bundle has a member collection member" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_miscellaneous_collection" ,
                  "valueMeaning": "The bundle has a miscellaneous collection member" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_schema_collection" ,
                  "valueMeaning": "The bundle has a schema collection member" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bundle_has_spice_kernel_collection" ,
                  "valueMeaning": "The bundle has a spice kernel collection member" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.md5_checksum" ,
            "title": "md5_checksum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The md5_checksum attribute is the 32-character hexadecimal number computed using the MD5 algorithm for the contiguous bytes of single digital object (as stored) or for an entire file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_MD5_Checksum" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum" ,
            "minimumCharacters": "32" ,
            "maximumCharacters": "32" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "[0-9a-fA-F]{32}" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Byte_Stream.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.character_encoding" ,
            "title": "character_encoding" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_encoding attribute identifies the standard that maps a set of allowed characters to their machine readable code." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "UTF-8" ,
                  "valueMeaning": "Values of Character_Data_Type have UTF-8 character encoding" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Character_Data_Type.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Checksum_Manifest.pds.parsing_standard_id" ,
            "title": "parsing_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The parsing_standard_id attribute provides the formal name of a standard used for the structure of a Parsable Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "MD5Deep 4.n" ,
                  "valueMeaning": "The checksum manifest is governed by the Message-Digest Algorithm (MD5) output of the MD5 Deep Package Version 4.n (see http:\/\/md5deep.sourceforge.net\/)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Checksum_Manifest.pds.record_delimiter" ,
            "title": "record_delimiter" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The record_delimiter attribute provides the character or characters used to indicate the end of a record." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Carriage-Return Line-Feed" ,
                  "valueMeaning": "Records in the Checksum Manifest are delimited by ASCII carriage-return line-feed pairs (0x0D_0x0A)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Line-Feed" ,
                  "valueMeaning": "Records in the Checksum Manifest are delimited by ASCII line-feed (0x0A)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "carriage-return line-feed" ,
                  "valueMeaning": "Records in the Checksum Manifest are delimited by ASCII carriage-return line-feed pairs (0x0D0x0A)" ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.author_list" ,
            "title": "author_list" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The author_list attribute contains a semi-colon-separated list of names of people to be cited as authors of the associated product. The general format for individual names is: SURNAME, GIVEN NAME(s). Initials may be used in lieu of given name(s). If the name contains a suffix (\"Jr.\", \"Sr.\", \"III\", etc.) it should be placed before the comma (,). Do not include the word \"and\" before the final author. All authors should be listed explicitly - do not elide the list using \"et al.\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a short (5KB or less) description of the product as a whole." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.doi" ,
            "title": "doi" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The doi attribute provides the Digital Object Identifier for an object, assigned by the appropriate DOI System Registration Agency." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_DOI" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_DOI" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "10\\.\\S+\/\\S+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.editor_list" ,
            "title": "editor_list" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The editor_list attribute contains a semi-colon-separated list of names of people to be cited as editors of the associated product. The general format for individual names is: SURNAME, GIVEN NAME(s). Initials may be used in lieu of given name(s). If the name contains a suffix (\"Jr.\", \"Sr.\", \"III\", etc.) it should be placed before the comma (,). Do not include the word \"and\" before the final editor. All editors should be listed explicitly - do not elide the list using \"et al.\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.keyword" ,
            "title": "keyword" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The keyword attribute provides one or more words to be used for  keyword search." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Citation_Information.pds.publication_year" ,
            "title": "publication_year" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The publication_year attribute provides the year in which the product should be considered as published. Generally, this will be the year the data were declared \"Certified\" or \"Archived\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Collection.pds.collection_type" ,
            "title": "collection_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The collection_type attribute provides a classification for the collection." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Browse" ,
                  "valueMeaning": "This is a BROWSE collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Calibration" ,
                  "valueMeaning": "This is a CALIBRATION collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Context" ,
                  "valueMeaning": "This is a CONTEXT collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Data" ,
                  "valueMeaning": "This is a DATA collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Document" ,
                  "valueMeaning": "This is a DOCUMENT collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "External" ,
                  "valueMeaning": "This is an EXTERNAL collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Geometry" ,
                  "valueMeaning": "This is a GEOMETRY collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Miscellaneous" ,
                  "valueMeaning": "This is a MISCELLANEOUS collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SPICE Kernel" ,
                  "valueMeaning": "This is a SPICE Kernel collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "XML Schema" ,
                  "valueMeaning": "This is an XML SCHEMA collection" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Collection.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.title" ,
            "title": "title" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The title attribute provides a short, descriptive text string suitable for use as a title or brief description in a display or listing of products." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Composite_Structure.pds.type_description" ,
            "title": "type_description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type_description attribute provides a description of the object's type." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Context_Area.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.class_name" ,
            "title": "class_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The class_name attribute provides the common name by which the class is identified, as well as the class within which the attribute is used." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.maximum_occurrences" ,
            "title": "maximum_occurrences" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The maximum occurrences attribute indicates the number of times something may occur. It is also called the maximum cardinality. The asterisk character is used as a value to indicate that no upper bound exists." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.minimum_occurrences" ,
            "title": "minimum_occurrences" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The minimum occurrences attribute indicates the number of times something may occur. It is also called the minimum cardinality." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Associate_External_Class.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.constant_value" ,
            "title": "constant_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The constant value attribute provides the value to be used if an attribute is static." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.identifier_reference" ,
            "title": "identifier_reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The identifier_reference attribute provides the value of an identifier." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.maximum_occurrences" ,
            "title": "maximum_occurrences" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The maximum occurrences attribute indicates the number of times something may occur. It is also called the maximum cardinality. The asterisk character is used as a value to indicate that no upper bound exists." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.minimum_occurrences" ,
            "title": "minimum_occurrences" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The minimum occurrences attribute indicates the number of times something may occur. It is also called the minimum cardinality." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "attribute_of" ,
                  "valueMeaning": "The referenced attribute is a member of this class" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "component_of" ,
                  "valueMeaning": "The referenced class is a component of this class" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "extension_of" ,
                  "valueMeaning": "The referenced class is an extension of this class" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "parent_of" ,
                  "valueMeaning": "This class is a parent of the referenced class" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "restriction_of" ,
                  "valueMeaning": "The referenced class is a restriction of this class" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "subclass_of" ,
                  "valueMeaning": "The referenced class is a subclass of this class" ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.maximum_occurrences" ,
            "title": "maximum_occurrences" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The maximum occurrences attribute indicates the number of times something may occur. It is also called the maximum cardinality. The asterisk character is used as a value to indicate that no upper bound exists." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.minimum_occurrences" ,
            "title": "minimum_occurrences" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The minimum occurrences attribute indicates the number of times something may occur. It is also called the minimum cardinality." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Association_External.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "attribute_of" ,
                  "valueMeaning": "The referenced attribute is a member of this class" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "component_of" ,
                  "valueMeaning": "The referenced class is a component of this class" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "extension_of" ,
                  "valueMeaning": "The referenced class is an extension of this class" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "parent_of" ,
                  "valueMeaning": "This class is a parent of the referenced class" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "restriction_of" ,
                  "valueMeaning": "The referenced class is a restriction of this class" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "subclass_of" ,
                  "valueMeaning": "The referenced class is a subclass of this class" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.definition" ,
            "title": "definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The definition attribute provides a statement, picture in words, or account that defines the term." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.nillable_flag" ,
            "title": "nillable_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The nillable_flag attribute indicates whether an attribute is allowed to take on nil as a value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.submitter_name" ,
            "title": "submitter_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The submitter_name attribute provides the name of the author, who submits the item to the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([0-9]+)(\\.){1}([0-9]+)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.definition" ,
            "title": "definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The definition attribute provides a statement, picture in words, or account that defines the term." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.instance_id" ,
            "title": "instance_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instance_id attribute provides an identifier for the single occurrence of an object, for example an XPath." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Extended.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.attribute_concept" ,
            "title": "attribute_concept" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The attribute_concept attribute provides the type of information (classification) conveyed by the attribute -- e.g., stop_date_time has  attribute_concept = date_time." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Address" ,
                  "valueMeaning": "The attribute has been classified as being an Address" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Angle" ,
                  "valueMeaning": "The attribute has been classified as being an Angle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Attribute" ,
                  "valueMeaning": "The attribute has been classified as being an Attribute" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Bit" ,
                  "valueMeaning": "The attribute has been classified as being a Bit" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Checksum" ,
                  "valueMeaning": "The attribute has been classified as being a Checksum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Collection" ,
                  "valueMeaning": "The attribute has been classified as being a Collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Constant" ,
                  "valueMeaning": "The attribute has been classified as being a Constant" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Cosine" ,
                  "valueMeaning": "The attribute has been classified as being a Cosine" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Count" ,
                  "valueMeaning": "The attribute has been classified as being a Count" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "DOI" ,
                  "valueMeaning": "The attribute has been classified as being a DOI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Delimiter" ,
                  "valueMeaning": "The attribute has been classified as being a Delimiter" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Description" ,
                  "valueMeaning": "The attribute has been classified as being a Description" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Deviation" ,
                  "valueMeaning": "The attribute has been classified as being a Deviation" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Direction" ,
                  "valueMeaning": "The attribute has been classified as being a Direction" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Distance" ,
                  "valueMeaning": "The attribute has been classified as being a Distance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Duration" ,
                  "valueMeaning": "The attribute has been classified as being a Duration" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Factor" ,
                  "valueMeaning": "The attribute has been classified as being a Factor" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Flag" ,
                  "valueMeaning": "The attribute has been classified as being a Flag" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Format" ,
                  "valueMeaning": "The attribute has been classified as being a Format" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Group" ,
                  "valueMeaning": "The attribute has been classified as being a Group" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Home" ,
                  "valueMeaning": "The attribute has been classified as being a Home" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ID" ,
                  "valueMeaning": "The attribute has been classified as being an Identifier" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Latitude" ,
                  "valueMeaning": "The attribute has been classified as being a Latitude" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Length" ,
                  "valueMeaning": "The attribute has been classified as being a Length" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "List" ,
                  "valueMeaning": "The attribute has been classified as being a List" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Location" ,
                  "valueMeaning": "The attribute has been classified as being a Location" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Logical" ,
                  "valueMeaning": "The attribute has been classified as being a Logical" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Longitude" ,
                  "valueMeaning": "The attribute has been classified as being a Longitude" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Mask" ,
                  "valueMeaning": "The attribute has been classified as being a Mask" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Maximum" ,
                  "valueMeaning": "The attribute has been classified as being a Maximum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Mean" ,
                  "valueMeaning": "The attribute has been classified as being a Mean" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Median" ,
                  "valueMeaning": "The attribute has been classified as being a Median" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Minimum" ,
                  "valueMeaning": "The attribute has been classified as being a Minimum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Name" ,
                  "valueMeaning": "The attribute has been classified as being a Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Note" ,
                  "valueMeaning": "The attribute has been classified as being a Note" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Number" ,
                  "valueMeaning": "The attribute has been classified as being a Number" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Offset" ,
                  "valueMeaning": "The attribute has been classified as being an Offset" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Order" ,
                  "valueMeaning": "The attribute has been classified as being an Order" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Parallel" ,
                  "valueMeaning": "The attribute has been classified as being a Parallel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Password" ,
                  "valueMeaning": "The attribute has been classified as being a Password" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Path" ,
                  "valueMeaning": "The attribute has been classified as being a Path" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Pattern" ,
                  "valueMeaning": "The attribute has been classified as being a Pattern" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Pixel" ,
                  "valueMeaning": "The attribute has been classified as being a Pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Quaternion" ,
                  "valueMeaning": "The attribute has been classified as being a Quaternion" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radius" ,
                  "valueMeaning": "The attribute has been classified as being a Radius" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ratio" ,
                  "valueMeaning": "The attribute has been classified as being a Ratio" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Reference" ,
                  "valueMeaning": "The attribute has been classified as being a Reference" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Resolution" ,
                  "valueMeaning": "The attribute has been classified as being a Resolution" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Role" ,
                  "valueMeaning": "The attribute has been classified as being a Role" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Rotation" ,
                  "valueMeaning": "The attribute has been classified as being a Rotation" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Scale" ,
                  "valueMeaning": "The attribute has been classified as being a Scale" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Sequence" ,
                  "valueMeaning": "The attribute has been classified as being a Sequence" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Set" ,
                  "valueMeaning": "The attribute has been classified as being a Set" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Size" ,
                  "valueMeaning": "The attribute has been classified as being a Size" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Status" ,
                  "valueMeaning": "The attribute has been classified as being a Status" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Summary" ,
                  "valueMeaning": "The attribute has been classified as being a Summary" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Syntax" ,
                  "valueMeaning": "The attribute has been classified as being a Syntax" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Temperature" ,
                  "valueMeaning": "The attribute has been classified as being a Temperature" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Text" ,
                  "valueMeaning": "The attribute has been classified as being a Text" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Title" ,
                  "valueMeaning": "The attribute has been classified as being a Title" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Type" ,
                  "valueMeaning": "The attribute has been classified as being a Type" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Unit" ,
                  "valueMeaning": "The attribute has been classified as being a Unit" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Unknown" ,
                  "valueMeaning": "The attribute has an Unknown classification" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Value" ,
                  "valueMeaning": "The attribute has been classified as being a Value" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Vector" ,
                  "valueMeaning": "The attribute has been classified as being a Vector" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.class_name" ,
            "title": "class_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The class_name attribute provides the common name by which the class is identified, as well as the class within which the attribute is used." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.definition" ,
            "title": "definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The definition attribute provides a statement, picture in words, or account that defines the term." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.nillable_flag" ,
            "title": "nillable_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The nillable_flag attribute indicates whether an attribute is allowed to take on nil as a value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.registered_by" ,
            "title": "registered_by" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The registered_by attribute provides the name of the person or organization that registered the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.registration_authority_id" ,
            "title": "registration_authority_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The registration_authority_id attribute provides the name of the organization that registered the object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "0001_NASA_PDS_1" ,
                  "valueMeaning": "The Attribute Registration_Authority is 0001_NASA_PDS_1" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.steward_id" ,
            "title": "steward_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The steward attribute indicates the person or organization that manages a set of registered attributes and classes." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "atm" ,
                  "valueMeaning": "Steward of the attribute is the PDS Atmospheres discipline node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "geo" ,
                  "valueMeaning": "Steward of the attribute is the PDS Geosciences discipline node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "img" ,
                  "valueMeaning": "Steward of the attribute is the PDS Imaging support node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "naif" ,
                  "valueMeaning": "Steward of the attribute is the PDS Navigation and Ancillary Information Facility support node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ops" ,
                  "valueMeaning": "Steward of the attribute is the PDS operations function" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pds" ,
                  "valueMeaning": "Steward of the attribute is the Planetary Data System" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ppi" ,
                  "valueMeaning": "Steward of the attribute is the PDS Planetary Plasma Interaction discipline node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "rings" ,
                  "valueMeaning": "Steward of the attribute is the PDS Rings discipline node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "rs" ,
                  "valueMeaning": "Steward of the attribute is the PDS radio science function" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "sbn" ,
                  "valueMeaning": "Steward of the attribute is the PDS Small Bodies discipline node" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.submitter_name" ,
            "title": "submitter_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The submitter_name attribute provides the name of the author, who submits the item to the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the attribute definition according to origin." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "PDS3" ,
                  "valueMeaning": "The attribute definition originated under PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS4" ,
                  "valueMeaning": "The attribute definition originated under PDS4" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Full.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([0-9]+)(\\.){1}([0-9]+)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Reference.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Attribute_Reference.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.abstract_flag" ,
            "title": "abstract_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The abstract flag attribute indicates whether or not the class can be instantiated. Abstract flag is only included if a value of 'true' is desired and indicates that the class is abstract and cannot be used in a label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.definition" ,
            "title": "definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The definition attribute provides a statement, picture in words, or account that defines the term." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.element_flag" ,
            "title": "element_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The element flag attribute indicates whether or not the class is defined as a xs:element in XML Schema." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.submitter_name" ,
            "title": "submitter_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The submitter_name attribute provides the name of the author, who submits the item to the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([0-9]+)(\\.){1}([0-9]+)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.definition" ,
            "title": "definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The definition attribute provides a statement, picture in words, or account that defines the term." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.instance_id" ,
            "title": "instance_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instance_id attribute provides an identifier for the single occurrence of an object, for example an XPath." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Extended.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.abstract_flag" ,
            "title": "abstract_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The abstract flag attribute indicates whether or not the class can be instantiated. Abstract flag is only included if a value of 'true' is desired and indicates that the class is abstract and cannot be used in a label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.definition" ,
            "title": "definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The definition attribute provides a statement, picture in words, or account that defines the term." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.element_flag" ,
            "title": "element_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The element flag attribute indicates whether or not the class is defined as a xs:element in XML Schema." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.registered_by" ,
            "title": "registered_by" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The registered_by attribute provides the name of the person or organization that registered the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.registration_authority_id" ,
            "title": "registration_authority_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The registration_authority_id attribute provides the name of the organization that registered the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.steward_id" ,
            "title": "steward_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The steward_id attribute provides the abbreviation of the organization that manages the set of registered attributes and classes." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "atm" ,
                  "valueMeaning": "Steward of the attribute is the PDS Atmospheres discipline node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "geo" ,
                  "valueMeaning": "Steward of the attribute is the PDS Geosciences discipline node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "img" ,
                  "valueMeaning": "Steward of the attribute is the PDS Imaging support node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "naif" ,
                  "valueMeaning": "Steward of the attribute is the PDS Navigation and Ancillary Information Facility support node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ops" ,
                  "valueMeaning": "Steward of the attribute is the PDS operations function" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pds" ,
                  "valueMeaning": "Steward of the attribute is the Planetary Data System" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ppi" ,
                  "valueMeaning": "Steward of the attribute is the PDS Planetary Plasma Interaction discipline node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "rings" ,
                  "valueMeaning": "Steward of the attribute is the PDS Rings discipline node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "rs" ,
                  "valueMeaning": "Steward of the attribute is the PDS radio science function" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "sbn" ,
                  "valueMeaning": "Steward of the attribute is the PDS Small Bodies discipline node" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.submitter_name" ,
            "title": "submitter_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The submitter_name attribute provides the name of the author, who submits the item to the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the attribute definition according to origin." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "PDS3" ,
                  "valueMeaning": "The class definition originated under PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS4" ,
                  "valueMeaning": "The class definition originated under PDS4" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Full.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([0-9]+)(\\.){1}([0-9]+)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Reference.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Class_Reference.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Context_Value_List.pds.attribute_name" ,
            "title": "attribute_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The attribute_name attribute provides the common name by which an attribute is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Context_Value_List.pds.attribute_relative_xpath" ,
            "title": "attribute_relative_xpath" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The attribute_relative_xpath attribute provides a location path for an attribute within a tree representation of an XML document. The location path includes the attribute name." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value.pds.value" ,
            "title": "value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The value attribute provides a single, allowed numerical or character string value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value.pds.value_meaning" ,
            "title": "value_meaning" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The value_meaning attribute provides the meaning, or semantic content, of the associated permissible value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value" ,
            "title": "value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The value attribute provides a single, allowed numerical or character string value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_begin_date" ,
            "title": "value_begin_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The value_begin_date attribute provides the first date on which the permissible value is in effect." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_end_date" ,
            "title": "value_end_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The value_end_date attribute provides the last date on which the permissible value is in effect." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Permissible_Value_Full.pds.value_meaning" ,
            "title": "value_meaning" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The value_meaning attribute provides the meaning, or semantic content, of the associated permissible value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.rule_assign" ,
            "title": "rule_assign" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The rule_assign attribute provides an assignment statement for a schematron rule." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule.pds.rule_context" ,
            "title": "rule_context" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The rule_context attribute provides the xpath for the rule." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_description" ,
            "title": "rule_description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The rule_description attribute provides a description of the rule statement suitable for  user documentation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_message" ,
            "title": "rule_message" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The rule_message attribute provides a message to be displayed by the schematron processor when the test condition is  met." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_test" ,
            "title": "rule_test" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The rule_test attribute provides the body of the statement to be executed by the schematron processor." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_type" ,
            "title": "rule_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The rule_type attribute indicates the type of statement to be executed." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Assert" ,
                  "valueMeaning": "Assert rules are usually used for error detection. If the test fails, the associated message is displayed. Under PDS4 an assert statement will be generated from the specification provided." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Assert Every" ,
                  "valueMeaning": "An Assert Every rule is an extension to the Assert rule that indicates that the \"every\" qualifier is included in the rule specification. Under PDS4 an assert statement will be generated from the specification provided." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Assert If" ,
                  "valueMeaning": "An Assert IF rule is an extension to the Assert rule that indicates that the \"if-then\" pattern is included in the rule specification. Under PDS4 an assert statement will be generated from the specification provided." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Report" ,
                  "valueMeaning": "Report rules are usually used for information-gathering. If the test succeeds, the associated message is displayed. Under PDS4 a report statement will be generated from the specification provided." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Rule_Statement.pds.rule_value" ,
            "title": "rule_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The rule_value attribute provides values to be used to complete certain schematon statements." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.enumeration_flag" ,
            "title": "enumeration_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The enumeration_flag attribute indicates whether there is an enumerated set of permissible values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.unit_of_measure_type" ,
            "title": "unit_of_measure_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The unit_of_measure_type attribute identifies the class from which the attribute being defined in this data dictionary draws its possible expressions for units." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Units_of_Acceleration" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Acceleration." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Amount_Of_Substance" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Amounts_of_Substance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Angle" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Angle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Angular_Velocity" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Angular_Velocity" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Area" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Area" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Current" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Current" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Energy" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Energy" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Force" ,
                  "valueMeaning": "The value is given in a unit which conveys force" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Frame_Rate" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Frame_Rate" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Frequency" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Frequency" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Gmass" ,
                  "valueMeaning": "The value is given in a unit which conveys Gmass" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Length" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Length" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Map_Scale" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Map_Scale" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Mass" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Mass" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Mass_Density" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Mass_Density" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Misc" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Misc" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_None" ,
                  "valueMeaning": "The attribute being defined is dimensionless." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Optical_Path_Length" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Optical_Path_Length" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Resolution_Angular" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Resolution_Angular" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Resolution_Linear" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Resolution_Linear" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Resolution_Map" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Resolution_Map" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Scale_Angular" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Scale_Angular" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Scale_Linear" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Scale_Linear" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Scale_Map" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Scale_Map" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Power" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Power" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pressure" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pressure" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Radiance" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Radiance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Rates" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Rates" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Solid_Angle" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Solid_Angle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Spectral_Irradiance" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Spectral_Irradiance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Spectral_Radiance" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Spectral_Radiance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Storage" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Storage" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Temperature" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Temperature" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Time" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Velocity" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Velocity" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Voltage" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Voltage" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Volume" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Volume" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Wavenumber" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Wavenumber" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain.pds.value_data_type" ,
            "title": "value_data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The value_data_type attribute is used in a data dictionary to specify the data type of an attribute's value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII_AnyURI" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_AnyURI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_BibCode" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_BibCode" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Boolean" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Boolean" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_DOI" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_DOI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_DOY" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_Time_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY_UTC" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_Time_DOY_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_Time_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD_UTC" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_Time_YMD_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_YMD" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Directory_Path_Name" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Directory_Path_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Name" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_File_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Specification_Name" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_File_Specification_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Integer" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LID" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_LIDVID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID_LID" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_LIDVID_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_MD5_Checksum" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_MD5_Checksum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_NonNegative_Integer" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_NonNegative_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base16" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Numeric_Base16" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base2" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Numeric_Base2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base8" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Numeric_Base8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Real" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Real" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Short_String_Collapsed" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Short_String_Collapsed" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Short_String_Preserved" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Short_String_Preserved" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Text_Collapsed" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Text_Collapsed" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Text_Preserved" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Text_Preserved" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Time" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_VID" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_VID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_Short_String_Collapsed" ,
                  "valueMeaning": "The value is expressed using the data type UTF8_Short_String_Collapsed" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_Short_String_Preserved" ,
                  "valueMeaning": "The value is expressed using the data type UTF8_Short_String_Preserved" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_Text_Collapsed" ,
                  "valueMeaning": "The value is expressed using the data type UTF8_Text_Collapsed" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_Text_Preserved" ,
                  "valueMeaning": "The value is expressed using the data type UTF8_Text_Preserved" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Vector_Cartesian_3" ,
                  "valueMeaning": "The value is expressed using the data type Vector_Cartesian_3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Vector_Cartesian_3_Acceleration" ,
                  "valueMeaning": "The value is expressed using the data type Vector_Cartesian_3_Acceleration" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Vector_Cartesian_3_Pointing" ,
                  "valueMeaning": "The value is expressed using the data type Vector_Cartesian_3_Pointing" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Vector_Cartesian_3_Position" ,
                  "valueMeaning": "The value is expressed using the data type Vector_Cartesian_3_Position" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Vector_Cartesian_3_Velocity" ,
                  "valueMeaning": "The value is expressed using the data type Vector_Cartesian_3_Velocity" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.conceptual_domain" ,
            "title": "conceptual_domain" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The conceptual_domain attribute provides the domain to which the value has been assigned." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Boolean" ,
                  "valueMeaning": "The value is classified as Boolean" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Integer" ,
                  "valueMeaning": "The value is classified as Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Name" ,
                  "valueMeaning": "The value is classified as Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Numeric" ,
                  "valueMeaning": "The value is classified as Numeric" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Real" ,
                  "valueMeaning": "The value is classified as Real" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Short_String" ,
                  "valueMeaning": "The value is classified as Short_String" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Text" ,
                  "valueMeaning": "The value is classified as Text" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Time" ,
                  "valueMeaning": "The value is classified as Time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Type" ,
                  "valueMeaning": "The value is classified as Type" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Unknown" ,
                  "valueMeaning": "The value has an Unknown classification" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.enumeration_flag" ,
            "title": "enumeration_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The enumeration_flag attribute indicates whether there is an enumerated set of permissible values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.formation_rule" ,
            "title": "formation_rule" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The formation_rule attribute provides a 'user friendly' instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.pattern" ,
            "title": "pattern" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The pattern attribute provides a symbolic instruction for forming values." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.unit_of_measure_type" ,
            "title": "unit_of_measure_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The unit_of_measure_type attribute identifies the class from which the attribute being defined in this data dictionary draws its possible expressions for units." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Units_of_Acceleration" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Acceleration" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Amount_Of_Substance" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Amount_of_Substance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Angle" ,
                  "valueMeaning": "The value is given in a unit which conveys angle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Angular_Velocity" ,
                  "valueMeaning": "The value is given in a unit which conveys angular velocity" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Area" ,
                  "valueMeaning": "The value is given in a unit which conveys area" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Current" ,
                  "valueMeaning": "The value is given in a unit which conveys current" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Energy" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Energy" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Force" ,
                  "valueMeaning": "The value is given in a unit which conveys force" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Frame_Rate" ,
                  "valueMeaning": "The value is given in a unit which conveys frame rate" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Frequency" ,
                  "valueMeaning": "The value is given in a unit which conveys frequency" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Gmass" ,
                  "valueMeaning": "The value is given in a unit which conveys Gmass" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Length" ,
                  "valueMeaning": "The value is given in a unit which conveys length" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Map_Scale" ,
                  "valueMeaning": "The value is given in a unit which conveys map scale" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Mass" ,
                  "valueMeaning": "The value is given in a unit which conveys mass" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Mass_Density" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Mass_Density" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Misc" ,
                  "valueMeaning": "The value is given in a unit which is in a miscellaneous category" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_None" ,
                  "valueMeaning": "The value is given without regard to a unit of measure" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Optical_Path_Length" ,
                  "valueMeaning": "The value is given in a unit which conveys optical path length" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Resolution_Angular" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Resolution_Angular" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Resolution_Linear" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Resolution_Linear" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Resolution_Map" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Resolution_Map" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Scale_Angular" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Scale_Angular" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Scale_Linear" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Scale_Linear" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pixel_Scale_Map" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Pixel_Scale_Map" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Power" ,
                  "valueMeaning": "The attribute being defined uses one of the values of unit_id listed in class Units_of_Power" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Pressure" ,
                  "valueMeaning": "The value is given in a unit which conveys pressure" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Radiance" ,
                  "valueMeaning": "The value is given in a unit which conveys radiance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Rates" ,
                  "valueMeaning": "The value is given in a unit which conveys rates or counts per unit time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Solid_Angle" ,
                  "valueMeaning": "The value is given in a unit which conveys solid angle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Spectral_Irradiance" ,
                  "valueMeaning": "The value is given in a unit which conveys spectral irradiance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Spectral_Radiance" ,
                  "valueMeaning": "The value is given in a unit which conveys spectral radiance" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Storage" ,
                  "valueMeaning": "The value is given in a unit which conveys computer storage" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Temperature" ,
                  "valueMeaning": "The value is given in a unit which conveys temperature" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Time" ,
                  "valueMeaning": "The value is given in a unit which conveys time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Velocity" ,
                  "valueMeaning": "The value is given in a unit which conveys velocity" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Voltage" ,
                  "valueMeaning": "The value is given in a unit which conveys voltage" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Volume" ,
                  "valueMeaning": "The value is given in a unit which conveys volume" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Units_of_Wavenumber" ,
                  "valueMeaning": "The value is given in a unit which conveys wavenumber" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.DD_Value_Domain_Full.pds.value_data_type" ,
            "title": "value_data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The value_data_type attribute is used in a data dictionary to specify the data type of an attribute's value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII_AnyURI" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_AnyURI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_BibCode" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_BibCode" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Boolean" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Boolean" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_DOI" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_DOI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_DOY" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_Time_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY_UTC" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_Time_DOY_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_Time_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD_UTC" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_Time_YMD_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_YMD" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Date_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Directory_Path_Name" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Directory_Path_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Name" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_File_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Specification_Name" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_File_Specification_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Integer" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LID" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_LIDVID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID_LID" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_LIDVID_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_MD5_Checksum" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_MD5_Checksum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_NonNegative_Integer" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_NonNegative_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base16" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Numeric_Base16" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base2" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Numeric_Base2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base8" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Numeric_Base8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Real" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Real" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Short_String_Collapsed" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Short_String_Collapsed" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Short_String_Preserved" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Short_String_Preserved" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Text_Collapsed" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Text_Collapsed" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Text_Preserved" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Text_Preserved" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Time" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_VID" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_VID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_Short_String_Collapsed" ,
                  "valueMeaning": "The value is expressed using the data type UTF8_Short_String_Collapsed" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_Short_String_Preserved" ,
                  "valueMeaning": "The value is expressed using the data type UTF8_Short_String_Preserved" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_Text_Collapsed" ,
                  "valueMeaning": "The value is expressed using the data type UTF8_Text_Collapsed" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_Text_Preserved" ,
                  "valueMeaning": "The value is expressed using the data type UTF8_Text_Preserved" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.abstract_desc" ,
            "title": "abstract_desc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The abstract desc attribute provides a summary of a text, scientific article, or document." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.archive_status" ,
            "title": "archive_status" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The ARCHIVE_STATUS attribute indicates the stage to which a data set has progressed in the archiving process, from IN QUEUE through ARCHIVED. It can also take on the values SUPERSEDED or SAFED, which indicate that the data set is not part of the active archive. ACCUMULATING can be appended to some values to indicate that the data set is incomplete and\/or that not all components have reached the stage given by the root value; ACCUMULATING would be used, for example, when the archive is being delivered incrementally, as from a mission that lasts many months or years." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ARCHIVED" ,
                  "valueMeaning": "Archive status of the PDS3 data set is ARCHIVED (passed peer review with all liens resolved. Available through the Data Set Catalog and at NSSDC)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ARCHIVED_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 data set is ARCHIVED_ACCUMULATING (some parts of the data set are ARCHIVED, but other parts are in earlier stages of the archiving process and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_LIEN_RESOLUTION" ,
                  "valueMeaning": "Archive status of the PDS3 data set is IN_LIEN_RESOLUTION (peer review completed; liens are in the process of being resolved; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_LIEN_RESOLUTION_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 data set is IN_LIEN_RESOLUTION_ACCUMULATING (some parts of the data set are IN LIEN RESOLUTION, but other parts are in earlier stages of the archiving process and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_PEER_REVIEW" ,
                  "valueMeaning": "Archive status of the PDS3 data set is IN_PEER_REVIEW (under peer review at the curation node but evaluation is not complete; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_PEER_REVIEW_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 data set is IN_PEER_REVIEW_ACCUMULATING (some parts of the data set are IN PEER REVIEW, but other parts are in earlier stages of the archiving process and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_QUEUE" ,
                  "valueMeaning": "Archive status of the PDS3 data set is IN_QUEUE (received at the curation node but no action has been taken by the curation node; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_QUEUE_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 data set is IN_QUEUE_ACCUMULATING (some parts of the data set are IN QUEUE, but other parts have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "LOCALLY_ARCHIVED" ,
                  "valueMeaning": "Archive status of the PDS3 data set is LOCALLY_ARCHIVED (passed peer review with all liens resolved; considered archived by the curation node but awaiting completion of the standard archiving process; possible TBD items include the arrival of the archive volume at NSSDC and ingestion of catalog information into the Data Set Catalog)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "LOCALLY_ARCHIVED_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 data set is LOCALLY_ARCHIVED_ACCUMULATING (some parts of the data set are LOCALLY ARCHIVED, but other parts are in earlier stages of the archiving process and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PRE_PEER_REVIEW" ,
                  "valueMeaning": "Archive status of the PDS3 data set is PRE_PEER_REVIEW (being prepared for peer review under the direction of the  curation node; use with caution).'" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PRE_PEER_REVIEW_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 data set is PRE_PEER_REVIEW_ACCUMULATING (some parts of the data set are in PRE PEER REVIEW, but other parts are IN QUEUE and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SAFED" ,
                  "valueMeaning": "Archive status of the PDS3 data set is SAFED (the data set has been received by the PDS with no evaluation; data will not be formally archived)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SUPERSEDED" ,
                  "valueMeaning": "Archive status of the PDS3 data set is SUPERSEDED (this data set has been replaced by a newer version, implying that the data set is not to be used unless the requester has specific reasons; when a data set has been superseded the Engineering Node, will notify NSSDC that their databases need to be updated to advise users of the new status and the location of the replacement data set)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.citation_text" ,
            "title": "citation_text" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The citation_text attribute provides a character string containing a literature or other citation in sufficient detail that the material  could be located in PDS or elsewhere." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.confidence_level_note" ,
            "title": "confidence_level_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The confidence_level_note attribute is a text field which characterizes the reliability of data within a data set or the reliability of a particular programming algorithm or software component. Essentially, this note discusses the level of confidence in the accuracy of the data or in the ability of the software to produce accurate results." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.data_set_desc" ,
            "title": "data_set_desc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The data_set_desc attribute describes the content and type of a data set and provides information required to use the data (such as binning information)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.data_set_id" ,
            "title": "data_set_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The data set id provides a formal name used to refer to a data set." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.data_set_name" ,
            "title": "data_set_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The data_set_name attribute provides the full name given to a data set or a data product. The data_set_name typically identifies the instrument that acquired the data of that instrument Example value data_set_id. Note This attribute is defined in the AMMOS Magellan catalog as an alias for file_name to provide backward compatibility" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.data_set_release_date" ,
            "title": "data_set_release_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The data_set_release_date attribute provides the date when a data set is released by the data producer for archive or publication. In many systems this represents the end of a proprietary or validation period. Formation rule In AMMOS identify the date at which a product may be released to the general public from proprietary access. AMMOS-related systems should apply this attribute only to proprietary data." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.data_set_terse_desc" ,
            "title": "data_set_terse_desc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "A one line description of the data set" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.producer_full_name" ,
            "title": "producer_full_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The producer_full_name attribute provides the full_name of the individual mainly responsible for the production of the data set. This individual does not have to be registered with the PDS." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.start_date_time" ,
            "title": "start_date_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The start_date_time attribute provides the date and time at the beginning of the data set." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Date_Time_YMD_UTC" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.start_time" ,
            "title": "start_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The start_time attribute provides the date and time of the beginning of an event or observation (whether it be a spacecraft, ground-based, or system event) in UTC." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.stop_date_time" ,
            "title": "stop_date_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The stop_date_time attribute provides the date and time at the end of the data set." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Date_Time_YMD_UTC" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Data_Set_PDS3.pds.stop_time" ,
            "title": "stop_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The stop_time element provides the date and time of the end of an observation or event (whether it be a spacecraft, ground-based, or system event) in UTC." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Digital_Object.pds.bit_string" ,
            "title": "bit_string" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The bit string attribute is a sequence of digital bits. It is the content of a digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Discipline_Facets.pds.discipline_name" ,
            "title": "discipline_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The discipline_name attribute describes the observing discipline (as opposed to a PDS Discipline Node Name, though the concepts and values are similar). Some of these values are, with respect to the PDS Nodes, inter-disciplinary and should be used when they are applicable in perference to the more restrictive values." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Atmospheres" ,
                  "valueMeaning": "atmospheric observations" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Fields" ,
                  "valueMeaning": "electric and magnetic field data" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Flux Measurements" ,
                  "valueMeaning": "photometry\/polarimetry not resulting in images or spectra" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Geosciences" ,
                  "valueMeaning": "observations of the surface or interior of a planet or satellite" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Imaging" ,
                  "valueMeaning": "any non-spectroscopic image, of any dimensionality (color, movies, etc.)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Particles" ,
                  "valueMeaning": "ions, electrons, and anything not classified as 'dust'" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio Science" ,
                  "valueMeaning": "observations of propagating electromagnetic waves" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ring-Moon Systems" ,
                  "valueMeaning": "other ring or ring-moon system data" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Small Bodies" ,
                  "valueMeaning": "other small body observations, including dust, shape models, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spectroscopy" ,
                  "valueMeaning": "light wavelength\/wave number spectra of any and all dimensionalities" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Display_2D_Image.pds.line_display_direction" ,
            "title": "line_display_direction" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The line_display_direction element is the preferred orientation of lines within an image for viewing on a display device. Note that if this keyword is present in a label, the sample_display_direction keyword must also be present and must contain a value orthogonal to the value selected for this keyword." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Down" ,
                  "valueMeaning": "The preferred orientation of lines within an image for viewing on a display device is Down" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Up" ,
                  "valueMeaning": "The preferred orientation of lines within an image for viewing on a display device is Up" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Display_2D_Image.pds.sample_display_direction" ,
            "title": "sample_display_direction" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sample_display_direction attribute provides the preferred orientation of samples within a line for viewing on a display device. The attribute sample_display_direction must be used with line_display_direction." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Right" ,
                  "valueMeaning": "The preferred orientation of samples within an line for viewing on a display device is Right" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.acknowledgement_text" ,
            "title": "acknowledgement_text" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The acknowledgement_text attribute is a character string which recognizes another's contribution, authority, or right." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.author_list" ,
            "title": "author_list" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The author_list attribute contains a semi-colon-separated list of names of people to be cited as authors of the associated product. The general format for individual names is: SURNAME, GIVEN NAME(s). Initials may be used in lieu of given name(s). If the name contains a suffix (\"Jr.\", \"Sr.\", \"III\", etc.) it should be placed before the comma (,). Do not include the word \"and\" before the final author. All authors should be listed explicitly - do not elide the list using \"et al.\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.copyright" ,
            "title": "copyright" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The copyright attribute is a character string giving  information about the exclusive right to make copies, license, and otherwise exploit an object, whether physical or digital." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.document_editions" ,
            "title": "document_editions" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The document_editions attribute provides a count of the total number of complete, distinct editions of the document." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.document_name" ,
            "title": "document_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The document_title attribute provides the full name of the published document. This optional attribute is used only if the title in the identification area of the document product is not sufficient." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.doi" ,
            "title": "doi" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The doi attribute provides the Digital Object Identifier for an object, assigned by the appropriate DOI System Registration Agency." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_DOI" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_DOI" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "10\\.\\S+\/\\S+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.editor_list" ,
            "title": "editor_list" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The editor_list attribute contains a semi-colon-separated list of names of people to be cited as editors of the associated product. The general format for individual names is: SURNAME, GIVEN NAME(s). Initials may be used in lieu of given name(s). If the name contains a suffix (\"Jr.\", \"Sr.\", \"III\", etc.) it should be placed before the comma (,). Do not include the word \"and\" before the final editor. All editors should be listed explicitly - do not elide the list using \"et al.\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.publication_date" ,
            "title": "publication_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The publication_date attribute provides the date on which an item was published." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document.pds.revision_id" ,
            "title": "revision_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The revision_id attribute provides the revision level of a document, which may be set outside PDS and may be different from its version_id." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes the edition, including how it is distinguished from other editions (if any)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.edition_name" ,
            "title": "edition_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The edition name attribute provides a name by which the edition is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.files" ,
            "title": "files" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The files attribute provides the number of files in the edition." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.language" ,
            "title": "language" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The language attribute provides the language used for definition and designation of the term." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "English" ,
                  "valueMeaning": "The text in the Document Edition is in English." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document_Edition.pds.starting_point_identifier" ,
            "title": "starting_point_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The starting_point attribute provides the local_identifier of the object to be accessed first." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document_File.pds.directory_path_name" ,
            "title": "directory_path_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The directory_path_name attribute provides a sequence of names that locates a directory in a hierarchy of directories." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Document_File.pds.document_standard_id" ,
            "title": "document_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The document_standard_id attribute provides the formal name of a standard used for the structure of a document file." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "7-Bit ASCII Text" ,
                  "valueMeaning": "The Document_File contains simple text using only the 7-Bit ASCII character set. ANSI X3.4-1986." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Encapsulated Postscript" ,
                  "valueMeaning": "The Document_File is governed by the external standard Encapsulated Postscript (EPS)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "GIF" ,
                  "valueMeaning": "The Document_File is governed by the standard  Graphics Interchange Format (GIF)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "HTML" ,
                  "valueMeaning": "The Document_File is governed by one of the HyperText Markup Language (HTML) standards such as IETF RFC 2070, W3C Recommendation 14-Jan-1997, ISO 8879:1986, or ISO\/IEC 15445:2000." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "HTML 2.0" ,
                  "valueMeaning": "The Document_File is governed by the standard HyperText Markup Language (HTML), IETF RFC 2070." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "HTML 3.2" ,
                  "valueMeaning": "The Document_File is governed by the standard HyperText Markup Language (HTML), W3C Recommendation 14-Jan-1997." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "HTML 4.0" ,
                  "valueMeaning": "The Document_File is governed by the standard HyperText Markup Language (HTML), ISO 8879:1986." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "HTML 4.01" ,
                  "valueMeaning": "The Document_File is governed by the standard HyperText Markup Language (HTML), ISO\/IEC 15445:2000." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "JPEG" ,
                  "valueMeaning": "The Document_File is governed by the standard Joint Photographic Experts Group (JPEG), ISO\/IEC 10918-1." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "LaTEX" ,
                  "valueMeaning": " The Document_File is governed by the standard LaTEX, Version LaTeX2e." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MPEG-4" ,
                  "valueMeaning": "The Document_File is governed by the standard Moving Picture Experts Group (MPEG), ISO\/IEC 14496-14, 14496-10 and 14496-3 subject to the restrictions laid out in the Document Products section of the PDS4 Standards Reference." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Microsoft Excel" ,
                  "valueMeaning": "The Document_File is governed by a Microsoft Excel standard (xls, xlsx), Microsoft Corporation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Microsoft Word" ,
                  "valueMeaning": "The Document_File is governed by a Microsoft Word standard, Microsoft Corporation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDF" ,
                  "valueMeaning": "The Document_File is governed by the standard Portable Document Format (PDF), ISO 32000-1:2008." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDF\/A" ,
                  "valueMeaning": "The Document_File is governed by the standard Portable Document Format \/ Archive (PDF\/A), ISO 19005-1:2005." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PNG" ,
                  "valueMeaning": "The Document_File is governed by the standard Portable Network Graphics (PNG), ISO\/IEC 15948:2004." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Postscript" ,
                  "valueMeaning": "The Document_File is governed by the standard Postscript (PS)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Rich Text" ,
                  "valueMeaning": "The Document_File is governed by the standard Rich Text Format (RTF), Microsoft Corporation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "TIFF" ,
                  "valueMeaning": "The Document_File is governed by the standard Tagged Image File Format (TIFF), Version 6.n, 1992." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF-8 Text" ,
                  "valueMeaning": "The Document_File contains simple text using UTF-8 Unicode character encodings. RFC 3629." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Element_Array.pds.data_type" ,
            "title": "data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The data_type attribute provides the hardware representation used to store a value in Element_Array." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ComplexLSB16" ,
                  "valueMeaning": "Values of Element_Array are stored as two 64-bit floating point numbers with the least significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ComplexLSB8" ,
                  "valueMeaning": "Values of Element_Array are stored as two 32-bit floating point numbers with the least significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ComplexMSB16" ,
                  "valueMeaning": "Values of Element_Array are stored as two 64-bit floating point numbers with the more significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ComplexMSB8" ,
                  "valueMeaning": "Values of Element_Array are stored as two 32-bit floating point numbers with the more significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IEEE754LSBDouble" ,
                  "valueMeaning": "Values of Element_Array are stored as 64-bit IEEE binary floating point numbers with the least significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IEEE754LSBSingle" ,
                  "valueMeaning": "Values of Element_Array are stored as 32-bit IEEE binary floating point numbers with the least significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IEEE754MSBDouble" ,
                  "valueMeaning": "Values of Element_Array are stored as 64-bit IEEE binary floating point numbers with the most significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IEEE754MSBSingle" ,
                  "valueMeaning": "Values of Element_Array are stored as 32-bit IEEE binary floating point numbers with the most significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedBitString" ,
                  "valueMeaning": "Values of Element_Array are stored as signed bit strings" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedByte" ,
                  "valueMeaning": "Values of Element_Array are stored as 8-bit signed binary integers" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedLSB2" ,
                  "valueMeaning": "Values of Element_Array are stored as 16-bit signed binary integers with the less significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedLSB4" ,
                  "valueMeaning": "Values of Element_Array are stored as 32-bit signed binary integers with the less significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedLSB8" ,
                  "valueMeaning": "Values of Element_Array are stored as 64-bit signed binary integers with the less significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedMSB2" ,
                  "valueMeaning": "Values of Element_Array are stored as 16-bit signed binary integers with the more significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedMSB4" ,
                  "valueMeaning": "Values of Element_Array are stored as twos-complement 32-bit binary integers with the most significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedMSB8" ,
                  "valueMeaning": "Values of Element_Array are stored as twos-complement 64-bit binary integers with the most significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedBitString" ,
                  "valueMeaning": "Values of Element_Array are stored as unsigned bit strings" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedByte" ,
                  "valueMeaning": "Values of Element_Array are stored as 8-bit unsigned binary integers" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedLSB2" ,
                  "valueMeaning": "Values of Element_Array are stored as 16-bit unsigned binary integers with the less significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedLSB4" ,
                  "valueMeaning": "Values of Element_Array are stored as 32-bit unsigned binary integers with the least significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedLSB8" ,
                  "valueMeaning": "Values of Element_Array are stored as 64-bit unsigned binary integers with the least significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedMSB2" ,
                  "valueMeaning": "Values of Element_Array are stored as 16-bit unsigned binary integers with the more significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedMSB4" ,
                  "valueMeaning": "Values of Element_Array are stored as 32-bit unsigned binary integers with the most significant byte first" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedMSB8" ,
                  "valueMeaning": "Values of Element_Array are stored as 64-bit unsigned binary integers with the most significant byte first" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Element_Array.pds.scaling_factor" ,
            "title": "scaling_factor" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The scaling_factor attribute is the scaling factor to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 1." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Element_Array.pds.unit" ,
            "title": "unit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit attribute provides the unit of measurement." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Element_Array.pds.value_offset" ,
            "title": "value_offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The value_offset attribute is the offset to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Audio.pds.encoding_standard_id" ,
            "title": "encoding_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The encoding_standard_id attribute provides the formal name of a standard used for the structure of an Encoded Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "M4A\/AAC" ,
                  "valueMeaning": "The data object contains audio encoded using the MPEG-4 standard and the AAC codec." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "WAV" ,
                  "valueMeaning": "The data object contains audio encoded using the WAV standard" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Binary.pds.encoding_standard_id" ,
            "title": "encoding_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The encoding_standard_id attribute provides the formal name of a standard used for the structure of an Encoded Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "CCSDS Space Communications Protocols" ,
                  "valueMeaning": "The digital object is governed by the Consultative Committee for Space Data Systems (CCSDS) recommended standards on telecommand, telemetry and space datalink protocols." ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.encoding_standard_id" ,
            "title": "encoding_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The encoding_standard_id attribute provides the formal name of a standard used for the structure of an Encoded Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.object_length" ,
            "title": "object_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The object_length attribute provides the length of the digital object in bytes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Byte_Stream.pds.offset" ,
            "title": "offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The offset attribute provides the displacement of the object starting position from the beginning of the parent structure (file, record, etc.).  If there is no displacement, offset=0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Header.pds.encoding_standard_id" ,
            "title": "encoding_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The encoding_standard_id attribute provides the formal name of the standard governing structure of the Encoded_Header digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "TIFF" ,
                  "valueMeaning": "The Header is governed by the standard Tagged Image File Format (TIFF), Version 6.0, 1992." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Image.pds.encoding_standard_id" ,
            "title": "encoding_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The encoding_standard_id attribute provides the formal name of a standard used for the structure of an Encoded Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "GIF" ,
                  "valueMeaning": "The Encoded_Image is governed by the standard Graphics Interchange Format (GIF)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "J2C" ,
                  "valueMeaning": "The Encoded_Image is governed by the standard JPEG2000 compressed image codestream." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "JPEG" ,
                  "valueMeaning": "The Encoded_Image is governed by the standard Joint Photographic Experts Group (JPEG), ISO\/IEC 10918-1." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDF" ,
                  "valueMeaning": "The Encoded_Image is governed by the standard Portable Document Format (PDF), ISO 32000-1:2008." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDF\/A" ,
                  "valueMeaning": "The Encoded_Image is governed by the standard Portable Document Format \/ Archive (PDF\/A), ISO 19005-1:2005." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PNG" ,
                  "valueMeaning": "The Encoded_Image is governed by the standard Portable Network Graphics (PNG), ISO\/IEC 15948:2004." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "TIFF" ,
                  "valueMeaning": "The Encoded_Image is governed by the standard Tagged Image File Format (TIFF), Version 6.n, 1992." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Native.pds.encoding_standard_id" ,
            "title": "encoding_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The encoding_standard_id attribute provides the formal name of a standard used for the structure of an Encoded Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "SEED 2.4" ,
                  "valueMeaning": "SEED (Standard for the Exchange of Earthquake Data) is an international standard format for archiving seismic data. The standard is maintained by the International Federation of Digital Seismograph Networks (FDSN). The details of the format are documented in the SEED Reference Manual, version 2.4 (published: 2009-01)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Encoded_Video.pds.encoding_standard_id" ,
            "title": "encoding_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The encoding_standard_id attribute provides the formal name of a standard used for the structure of an Encoded Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "MP4\/H.264" ,
                  "valueMeaning": "The data object contains video encoded using the MPEG-4 standard and the H.264 codec." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MP4\/H.264\/AAC" ,
                  "valueMeaning": "The data object contains video encoded using the MPEG-4 standard and the H.264 codec and audio encoded using the AAC codec." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.doi" ,
            "title": "doi" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The doi attribute provides the Digital Object Identifier for an object, assigned by the appropriate DOI System Registration Agency." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_DOI" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_DOI" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "10\\.\\S+\/\\S+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.External_Reference.pds.reference_text" ,
            "title": "reference_text" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference_text attribute provides a complete bibliographic citation for a published work." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.External_Reference_Extended.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.External_Reference_Extended.pds.url" ,
            "title": "url" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The url attribute provides a Uniform Resource Identifier (URI) that specifies where a resource is available and the mechanism for retrieving it." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_AnyURI" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_AnyURI" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Facility.pds.address" ,
            "title": "address" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The address attribute provides a mailing address." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Facility.pds.country" ,
            "title": "country" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "country" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Facility.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Facility.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Facility.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the facility according to its function." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Laboratory" ,
                  "valueMeaning": "The facility is a laboratory" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Observatory" ,
                  "valueMeaning": "The facility is an observatory" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field.pds.field_number" ,
            "title": "field_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_number attribute provides the position of a field, within a series of fields, counting from 1. If two fields within a record are physically separated by one or more groups, they have consecutive field numbers; the fields within the intervening group(s) are numbered separately.  Fields within a group separated by one or more (sub)groups, will also have consecutive field numbers." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.data_type" ,
            "title": "data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The data_type attribute provides the hardware representation used to store a value in Field_Binary (see PDS Standards Reference section \"Binary Data Types\")." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII_AnyURI" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_AnyURI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_BibCode" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_BibCode" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Boolean" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Boolean" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_DOI" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_DOI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_DOY" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Date_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Date_Time_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY_UTC" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Date_Time_DOY_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Date_Time_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD_UTC" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Date_Time_YMD_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_YMD" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Date_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Directory_Path_Name" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Directory_Path_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Name" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_File_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Specification_Name" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_File_Specification_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Integer" ,
                  "valueMeaning": "Values in Table_Binary_Field have data type ASCII_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LID" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_LIDVID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID_LID" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_LIDVID_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_MD5_Checksum" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_MD5_Checksum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_NonNegative_Integer" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_NonNegative_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base16" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Numeric_Base16" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base2" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Numeric_Base2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base8" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Numeric_Base8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Real" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Real" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_String" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_String" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Time" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_Time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_VID" ,
                  "valueMeaning": "Values in Field_Binary have data type ASCII_VID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ComplexLSB16" ,
                  "valueMeaning": "Values in Field_Binary have data type ComplexLSB16" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ComplexLSB8" ,
                  "valueMeaning": "Values in Field_Binary have data type ComplexLSB8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ComplexMSB16" ,
                  "valueMeaning": "Values in Field_Binary have data type ComplexMSB16" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ComplexMSB8" ,
                  "valueMeaning": "Values in Field_Binary have data type ComplexMSB8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IEEE754LSBDouble" ,
                  "valueMeaning": "Values in Field_Binary have data type IEEE754LSBDouble" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IEEE754LSBSingle" ,
                  "valueMeaning": "Values in Field_Binary have data type IEEE754LSBSingle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IEEE754MSBDouble" ,
                  "valueMeaning": "Values in Field_Binary have data type IEEE754MSBDouble" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IEEE754MSBSingle" ,
                  "valueMeaning": "Values in Field_Binary have data type IEEE754MSBSingle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedBitString" ,
                  "valueMeaning": "Values in Field_Binary have data type SignedBitString" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedByte" ,
                  "valueMeaning": "Values in Field_Binary have data type SignedByte" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedLSB2" ,
                  "valueMeaning": "Values in Field_Binary have data type SignedLSB2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedLSB4" ,
                  "valueMeaning": "Values in Field_Binary have data type SignedLSB4" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedLSB8" ,
                  "valueMeaning": "Values in Field_Binary have data type SignedLSB8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedMSB2" ,
                  "valueMeaning": "Values in Field_Binary have data type SignedMSB2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedMSB4" ,
                  "valueMeaning": "Values in Field_Binary have data type SignedMSB4" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SignedMSB8" ,
                  "valueMeaning": "Values in Field_Binary have data type SignedMSB8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_String" ,
                  "valueMeaning": "Values in Field_Binary have data type UTF8_String" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedBitString" ,
                  "valueMeaning": "Values in Field_Binary have data type UnsignedBitString" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedByte" ,
                  "valueMeaning": "Values in Field_Binary have data type UnsignedByte" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedLSB2" ,
                  "valueMeaning": "Values in Field_Binary have data type UnsignedLSB2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedLSB4" ,
                  "valueMeaning": "Values in Field_Binary have data type UnsignedLSB4" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedLSB8" ,
                  "valueMeaning": "Values in Field_Binary have data type UnsignedLSB8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedMSB2" ,
                  "valueMeaning": "Values in Field_Binary have data type UnsignedMSB2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedMSB4" ,
                  "valueMeaning": "Values in Field_Binary have data type UnsignedMSB4" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedMSB8" ,
                  "valueMeaning": "Values in Field_Binary have data type UnsignedMSB8" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.field_format" ,
            "title": "field_format" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_format attribute gives the magnitude and precision of the data value. This may specify the output format for a binary value, or give a general indication of the precision of a field, but is not used for validation. A subset of the standard POSIX string formats is allowed. See the PDS Standards Reference section “Field Formats” for details." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "%[\\+,-]?[0-9]+(\\.([0-9]+))?[doxfeEs]" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.field_length" ,
            "title": "field_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_length attribute provides the number of bytes in the field." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.field_location" ,
            "title": "field_location" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_location attribute provides the starting byte for a field within a record or group, counting from '1'." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.scaling_factor" ,
            "title": "scaling_factor" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The scaling_factor attribute is the scaling factor to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 1." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.unit" ,
            "title": "unit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit attribute provides the unit of measurement." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Binary.pds.value_offset" ,
            "title": "value_offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The value_offset attribute is the offset to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.data_type" ,
            "title": "data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The data_type attribute provides the hardware representation used to store a value in Field_Bit (see PDS Standards Reference section \"Binary Data Types\")." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "SignedBitString" ,
                  "valueMeaning": "Values of Field_Bit are stored as signed bit strings" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UnsignedBitString" ,
                  "valueMeaning": "Values of Field_Bit are stored as unsigned bit strings" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.field_format" ,
            "title": "field_format" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_format attribute gives the magnitude and precision of the data value. This may specify the output format for a binary value, or give a general indication of the precision of a field, but is not used for validation. A subset of the standard POSIX string formats is allowed. See the PDS Standards Reference section “Field Formats” for details." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "%[\\+,-]?[0-9]+(\\.([0-9]+))?[doxfeEs]" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.scaling_factor" ,
            "title": "scaling_factor" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The scaling_factor attribute is the scaling factor to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 1." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.start_bit" ,
            "title": "start_bit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The start_bit attribute provides the position of the first bit within an ordered sequence of bits." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.start_bit_location" ,
            "title": "start_bit_location" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The start_bit_location attribute provides the position of the first bit in a bit field relative to the first bit in the parent packed data field. Bytes are sequential and bits are numbered continuously across byte boundaries within a single bit field. The first bit position in the packed data field is \"1\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.stop_bit" ,
            "title": "stop_bit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The stop-bit attribute provides the location of the last bit in this bit field relative to the first bit in the packed_data field.  Bits are numbered continuously across byte boundaries.  The first bit location in the packed data field is \"1\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.stop_bit_location" ,
            "title": "stop_bit_location" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The stop_bit_location attribute provides the position of the last bit in a bit field relative to the first bit in the parent packed data field. Bytes are sequential and bits are numbered continuously across byte boundaries within a single bit field. The first bit position in the packed data field is \"1\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.unit" ,
            "title": "unit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit attribute provides the unit of measurement." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Bit.pds.value_offset" ,
            "title": "value_offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The value_offset attribute is the offset to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.data_type" ,
            "title": "data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The data_type attribute provides the hardware representation used to store a value in Field_Character (see PDS Standards Reference section \"Character Data Types\")." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII_AnyURI" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_AnyURI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_BibCode" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_BibCode" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Boolean" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Boolean" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_DOI" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_DOI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_DOY" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Date_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Date_Time_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY_UTC" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Date_Time_DOY_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Date_Time_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD_UTC" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Date_Time_YMD_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_YMD" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Date_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Directory_Path_Name" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Directory_Path_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Name" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_File_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Specification_Name" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_File_Specification_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Integer" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LID" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_LIDVID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID_LID" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_LIDVID_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_MD5_Checksum" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_MD5_Checksum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_NonNegative_Integer" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_NonNegative_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base16" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Numeric_Base16" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base2" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Numeric_Base2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base8" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Numeric_Base8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Real" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Real" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_String" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_String" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Time" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_Time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_VID" ,
                  "valueMeaning": "Values in Field_Character have data type ASCII_VID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_String" ,
                  "valueMeaning": "Values in Field_Character have data type UTF8_String" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.field_format" ,
            "title": "field_format" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_format attribute gives the magnitude and precision of the data value. This may specify the output format for a binary value, or give a general indication of the precision of a field, but is not used for validation. A subset of the standard POSIX string formats is allowed. See the PDS Standards Reference section “Field Formats” for details." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "%[\\+,-]?[0-9]+(\\.([0-9]+))?[doxfeEs]" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.field_length" ,
            "title": "field_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_length attribute provides the number of bytes in the field." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.field_location" ,
            "title": "field_location" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_location attribute provides the starting byte for a field within a record or group, counting from '1'." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.scaling_factor" ,
            "title": "scaling_factor" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The scaling_factor attribute is the scaling factor to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 1." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.unit" ,
            "title": "unit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit attribute provides the unit of measurement." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.validation_format" ,
            "title": "validation_format" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The validation_format attribute gives the magnitude and precision of the data value with the expectation that both will be validated exactly. A subset of the standard POSIX string formats is allowed. See the PDS Standards Reference section \"Field Formats\" for details." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "%[\\+,-]?[0-9]+(\\.([0-9]+))?[doxfeEs]" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Character.pds.value_offset" ,
            "title": "value_offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The value_offset attribute is the offset to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.data_type" ,
            "title": "data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The data_type attribute provides the hardware representation used to store a value in Field_Delimited (see PDS Standards Reference section \"Character Data Types\")." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII_AnyURI" ,
                  "valueMeaning": "The delimited field has data type ASCII_AnyURI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_BibCode" ,
                  "valueMeaning": "Values in Field_Delimited have data type ASCII_BibCode" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Boolean" ,
                  "valueMeaning": "Values in Field_Delimited have data type ASCII_Boolean" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_DOI" ,
                  "valueMeaning": "The delimited field has data type ASCII_DOI" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_DOY" ,
                  "valueMeaning": "The delimited field has data type ASCII_Date_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY" ,
                  "valueMeaning": "The delimited field has data type ASCII_Date_Time_DOY" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_DOY_UTC" ,
                  "valueMeaning": "Values in Field_Delimited have data type ASCII_Date_Time_DOY_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD" ,
                  "valueMeaning": "The delimited field has data type ASCII_Date_Time_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_Time_YMD_UTC" ,
                  "valueMeaning": "Values in Field_Delimited have data type ASCII_Date_Time_YMD_UTC" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Date_YMD" ,
                  "valueMeaning": "The delimited field has data type ASCII_Date_YMD" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Directory_Path_Name" ,
                  "valueMeaning": "Values in Field_Delimited have data type ASCII_Directory_Path_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Name" ,
                  "valueMeaning": "The delimited field has data type ASCII_File_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_File_Specification_Name" ,
                  "valueMeaning": "The delimited field has data type ASCII_File_Specification_Name" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Integer" ,
                  "valueMeaning": "The delimited field has data type ASCII_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LID" ,
                  "valueMeaning": "The delimited field has data type ASCII_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID" ,
                  "valueMeaning": "The delimited field has data type ASCII_LIDVID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_LIDVID_LID" ,
                  "valueMeaning": "Values in Field_Delimited have data type ASCII_LIDVID_LID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_MD5_Checksum" ,
                  "valueMeaning": "The delimited field has data type ASCII_MD5_Checksum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_NonNegative_Integer" ,
                  "valueMeaning": "The delimited field has data type ASCII_NonNegative_Integer" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base16" ,
                  "valueMeaning": "The delimited field has data type ASCII_Numeric_Base16" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base2" ,
                  "valueMeaning": "The delimited field has data type ASCII_Numeric_Base2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Numeric_Base8" ,
                  "valueMeaning": "Values in Field_Delimited have data type ASCII_Numeric_Base8" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Real" ,
                  "valueMeaning": "The delimited field has data type ASCII_Real" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_String" ,
                  "valueMeaning": "Values in Field_Delimited have data type ASCII_String" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_Time" ,
                  "valueMeaning": "The delimited field has data type ASCII_Time" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ASCII_VID" ,
                  "valueMeaning": "The delimited field has data type ASCII_VID" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF8_String" ,
                  "valueMeaning": "Values in Field_Delimited have data type UTF8_String" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.field_format" ,
            "title": "field_format" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_format attribute gives the magnitude and precision of the data value. This may specify the output format for a binary value, or give a general indication of the precision of a field, but is not used for validation. A subset of the standard POSIX string formats is allowed. See the PDS Standards Reference section “Field Formats” for details." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "%[\\+,-]?[0-9]+(\\.([0-9]+))?[doxfeEs]" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.maximum_field_length" ,
            "title": "maximum_field_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_field_length attribute sets an upper, inclusive bound on the number of bytes in the field." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.scaling_factor" ,
            "title": "scaling_factor" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The scaling_factor attribute is the scaling factor to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 1." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.unit" ,
            "title": "unit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit attribute provides the unit of measurement." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Delimited.pds.value_offset" ,
            "title": "value_offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The value_offset attribute is the offset to be applied to each stored value in order to recover an original  value. The observed value (Ov) is calculated from the stored value (Sv) thus: Ov = (Sv * scaling_factor) + value_offset. The default value is 0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.maximum" ,
            "title": "maximum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum attribute provides the largest stored value which appears in the field over all records (empty fields and Special_Constants values are excluded)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.mean" ,
            "title": "mean" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The mean attribute provides the sum of the stored field values divided by the number of values in all records (empty fields and Special_Constants values are excluded from both the sum and the count)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.median" ,
            "title": "median" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The median attribute provides the number separating the larger half of stored field values from the algebraically smaller half over all records (empty fields and Special_Constants values are excluded from the sort)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.minimum" ,
            "title": "minimum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum attribute provides the algebraically smallest stored value which appears in the field over all records (empty fields and Special_Constants values are excluded)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Field_Statistics.pds.standard_deviation" ,
            "title": "standard_deviation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The standard_deviation attribute provides the standard deviation of the stored field  over all records (empty fields and Special_Constants values are excluded from the computation)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.File.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.File.pds.creation_date_time" ,
            "title": "creation_date_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The creation_date_time attribute provides a date and time when the object was created." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.File.pds.file_URL" ,
            "title": "file_URL" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The file_URL holds a reference or link to a version of the data that can be downloaded, streamed, or even accessed\/visualized via a Web service. URL stands for Uniform Resource Locator and is the address of a given unique resource on the Web, whether it is linked to an image, table, HTML page, or other Web resource." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.File.pds.file_name" ,
            "title": "file_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The file_name attribute provides the name of a file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.File.pds.file_size" ,
            "title": "file_size" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The file_size attribute provides the size of the file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.File.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.File.pds.md5_checksum" ,
            "title": "md5_checksum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The md5_checksum attribute is the 32-character hexadecimal number computed using the MD5 algorithm for the contiguous bytes of single digital object (as stored) or for an entire file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_MD5_Checksum" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum" ,
            "minimumCharacters": "32" ,
            "maximumCharacters": "32" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([a-f0-9]{32})" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.File.pds.records" ,
            "title": "records" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The records attribute provides a count of records." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_acknowledgement_text" ,
            "title": "funding_acknowledgement_text" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The funding_acknowledgement_text attribute provides a text description of the relationship between the funding source and the archival data." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_award" ,
            "title": "funding_award" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The funding_award attribute provides a unique alphanumeric identifier of the funding award within the funding_source." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_source" ,
            "title": "funding_source" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The funding_source attribute provides the identifier for an agency or other entity that provided financial assistance in the poroduction of the archival data." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "NASA" ,
                  "valueMeaning": "U.S.: National Aeronautics and Space Administration" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "NSF" ,
                  "valueMeaning": "U.S.: National Science Foundation" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "RAS" ,
                  "valueMeaning": "U.K.: Royal Astronomical Society" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Funding_Acknowledgement.pds.funding_year" ,
            "title": "funding_year" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The funding_year attribute provides the year that funding was awarded." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "4" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "9999" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group.pds.fields" ,
            "title": "fields" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The fields attribute provides a count of the total number of scalar fields directly associated with a group.  Fields within (sub) groups of the group are not included in this count." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group.pds.group_number" ,
            "title": "group_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The group_number attribute provides the position of a group, within a series of groups, counting from 1.  If two groups within a record are physically separated by one or more fields, they have consecutive group numbers; the intervening fields are numbered separately.  Groups within a parent group, but separated by one or more fields, will also have consecutive group numbers." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group.pds.groups" ,
            "title": "groups" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The groups attribute provides a count of the number of (sub)groups within the repeating structure of a group.  (Subsub)groups within (sub)groups within the group are not included in this count." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group.pds.repetitions" ,
            "title": "repetitions" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The repetitions attribute provides the number of times a set of repeating fields and, possibly, (sub)groups is replicated within a group." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Facet1.pds.facet1" ,
            "title": "facet1" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The facet1 attribute provides a sub-categorization under the discipline_name.  The values are restricted according to the value of discipline_name." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "2D" ,
                  "valueMeaning": "A 2D array in which each pixel value directly represents the spectral measurement at that point.  The physical axes of the array align with the axes of the spectral data." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Color" ,
                  "valueMeaning": "3D data, typically with two spatial axes, where the third axis contains display color levels (RGB, CMYK, false color, etc.)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Color Movie" ,
                  "valueMeaning": "4D data, typically with two spatial, one color, and one temporal axis" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dust Study" ,
                  "valueMeaning": "Dust measurements of all kinds and all targets" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dynamical Properties" ,
                  "valueMeaning": "Orbital parameters, proper elements, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Electric" ,
                  "valueMeaning": "Electrical field measurements" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Electrons" ,
                  "valueMeaning": "Electron measurements" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Gas Study" ,
                  "valueMeaning": "Gas measurements of all kinds and targets" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Grayscale" ,
                  "valueMeaning": "2D data, typically with two spatial axes" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Historical Reference" ,
                  "valueMeaning": "Discovery circumstances, reference collections" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ions" ,
                  "valueMeaning": "Ion measurements" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Lightcurve" ,
                  "valueMeaning": "Light intensity variation with time, including rotational, secular, and occultation light curves" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Linear" ,
                  "valueMeaning": "A table representing a single spectrum" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Magnetic" ,
                  "valueMeaning": "Magnetic field measurements" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteoritics" ,
                  "valueMeaning": "Meteoroid streams, meteorite studies" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteorology" ,
                  "valueMeaning": "Meteorological observations" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Movie" ,
                  "valueMeaning": "3D data, typically with two spatial and one temporal axis" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Neutrals" ,
                  "valueMeaning": "Neutral particle measurements" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Photometry" ,
                  "valueMeaning": "Photon measurements resulting in magnitudes, colors, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Physical Properties" ,
                  "valueMeaning": "Mass, density, albedo, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Polarimetry" ,
                  "valueMeaning": "Linear and circular polarization studies" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Production Rates" ,
                  "valueMeaning": "Quantification of mass loss from, e.g., the nucleus of a comet: molecular production rates, Af?, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ring Compositional Map" ,
                  "valueMeaning": "3D data, typically with two spatial axes, where the third axis uses either color or intensity to depict chemical or particle size variations within the rings." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ring Occultation Profile" ,
                  "valueMeaning": "Derived ring occultation data uniformly sampled along the radial axis. The occulted signal may be either, radio, solar, or stellar in origin." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ring Thermal Map" ,
                  "valueMeaning": "3D data, typically with two spatial axes, where the third axis uses either color or intensity to depict temperature variations within the rings." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Satellite Astrometry" ,
                  "valueMeaning": "Astrometry of natural satellite in ring systems" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Shape Model" ,
                  "valueMeaning": "Shape models, slope models, terrain models, elevation models, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spectral Cube" ,
                  "valueMeaning": "Any 3D structure containing spectral data" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spectral Image" ,
                  "valueMeaning": "A 2D image of a spectrum, as projected on a focal plane. There may be multiple orders present, and the axes of the spectrum\/spectra typically do not align with the edges of the image." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Structure" ,
                  "valueMeaning": "Atmospheric structure observations" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Tabulated" ,
                  "valueMeaning": "A table with one spectrum per record, possibly for a different target in each record" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Taxonomy" ,
                  "valueMeaning": "Physical and dynamical taxonomies of small bodies" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Facet1.pds.subfacet1" ,
            "title": "subfacet1" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The subfacet1 attribute provides a sub-categorization under the facet1 value.  The allowed values are restricted according to the value of facet1." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Facet2.pds.facet2" ,
            "title": "facet2" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The facet2 attribute provides a sub-categorization (under the discipline_name) of the type of data being described by Primary_Result_Summary.  The  facet1  and  factet2  values are intended to provide independent sub-categorizations. The values are restricted according to the value of discipline_name. Type: ASCII_Short_String_Collapsed" ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Background" ,
                  "valueMeaning": "Data characterize the slowly varying background field (typically at less than 100 Hz)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Cosmic Ray" ,
                  "valueMeaning": "Data characterize the particle envornment at energies greater than about 10 MeV" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Energetic" ,
                  "valueMeaning": "Data characterize the particle environment at energies in the approximate range 30keV-0.1 MeV" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Plasma" ,
                  "valueMeaning": "Data characterize the particle environment at energies less than about 30keV" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Solar Energetic" ,
                  "valueMeaning": "Data characterize the particle environment at energies in the approximate range 0.1-10MeV" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Waves" ,
                  "valueMeaning": "Data characterize higher frequency field variations and\/or oscillations (typically at greater than 100 Hz)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Facet2.pds.subfacet2" ,
            "title": "subfacet2" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The subfacet2 attribute provides a sub-categorization under the facet2 value.  The allowed values are restricted according to the value of facet2." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Field_Binary.pds.group_length" ,
            "title": "group_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The group_length attribute provides the total length, in bytes, of a repeating field and\/or group structure. It is the number of bytes in the repeating fields\/groups plus any embedded unused bytes that are also repeated multiplied by the number of repetitions." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Field_Binary.pds.group_location" ,
            "title": "group_location" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The group_location attribute provides the starting position for a Group_Field_Binary within the containing Record_Binary or Group_Field_Binary class, in bytes. Location '1' denotes the first byte of the containing class." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Field_Character.pds.group_length" ,
            "title": "group_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The group_length attribute provides the total length, in bytes, of a repeating field and\/or group structure. It is the number of bytes in the repeating fields\/groups plus any embedded unused bytes that are also repeated multiplied by the number of repetitions." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Group_Field_Character.pds.group_location" ,
            "title": "group_location" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The group_location attribute provides the starting position for a Group_Field_Character within the containing Record_Character or Group_Field_Character class, in bytes. Location '1' denotes the first byte of the containing class." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Header.pds.object_length" ,
            "title": "object_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The object_length attribute provides the length of the digital object in bytes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Header.pds.parsing_standard_id" ,
            "title": "parsing_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The parsing_standard_id attribute provides the formal name of a standard used for the structure of a Parsable Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "7-Bit ASCII Text" ,
                  "valueMeaning": "The Header contains simple text using only the 7-Bit ASCII character set. ANSI X3.4-1986." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "CDF 3.4 ISTP\/IACG" ,
                  "valueMeaning": "The Header is governed by Version 3.4 of the CDF format specification, the ISTP\/IACG guidelines and PDS constraints." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "CDF 3.5 ISTP\/IACG" ,
                  "valueMeaning": "The Header is governed by Version 3.5 of the CDF format specification, the ISTP\/IACG guidelines and PDS constraints." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "CDF 3.6 ISTP\/IACG" ,
                  "valueMeaning": "The Header is governed by Version 3.6 of the CDF format specification, the ISTP\/IACG guidelines and PDS constraints." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "CDF 3.7 ISTP\/IACG" ,
                  "valueMeaning": "The Header is governed by Version 3.7 of the CDF format specification, the ISTP\/IACG guidelines and PDS constraints." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "CDF 3.8 ISTP\/IACG" ,
                  "valueMeaning": "The Header is governed by Version 3.8 of the CDF format specification, the ISTP\/IACG guidelines and PDS constraints." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "FITS 3.0" ,
                  "valueMeaning": "The Header is governed by the standard Flexible Image Transport System (FITS), Version 3.0." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "FITS 4.0" ,
                  "valueMeaning": "The Header is governed by the standard Flexible Image Transport System (FITS), Version 4.0." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ISIS2" ,
                  "valueMeaning": "The Header is governed by the standard Integrated Software for Imagers and Spectrometers (ISIS), USGS Astrogeology Isis Cube, Version 2." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ISIS2 History Label" ,
                  "valueMeaning": "An ISIS history label contains text information that records the sequence of processing operations that created an ISIS file. A description of the format of the label is available in section 5.2 of the ISIS2 Overview documentation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ISIS3" ,
                  "valueMeaning": "The Header is governed by the standard Integrated Software for Imagers and Spectrometers (ISIS), USGS Astrogeology ISIS Cube, Version 3." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS DSV 1" ,
                  "valueMeaning": "The format is delimiter separated value (DSV); see Standards Reference section 4C.1." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS ODL 2" ,
                  "valueMeaning": "The Header is governed by the standard Planetary Data System (PDS) Object Description Language (ODL), Version 2.n." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS3" ,
                  "valueMeaning": "The Header is governed by the Planetary Data System (PDS) Data Standards Version 3.n." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Pre-PDS3" ,
                  "valueMeaning": "The Header is governed by Planetary Data System (PDS) Data Standards prior to Version 3.0." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "TIFF 6.0" ,
                  "valueMeaning": "The Header is governed by the Tagged Image File Format (TIFF) version 6.0 standard." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF-8 Text" ,
                  "valueMeaning": "The Header contains simple text using UTF-8 Unicode character encodings. RFC 3629." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "VICAR1" ,
                  "valueMeaning": "The Header is governed by the standard Video Image Communication And Retrieval (VICAR)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "VICAR2" ,
                  "valueMeaning": "The Header is governed by the standard Video Image Communication And Retrieval (VICAR)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.information_model_version" ,
            "title": "information_model_version" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The information_model_version attribute provides the  version identification of the PDS Information Model on which the label and schema are based." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1.0.0.0" ,
                  "valueMeaning": "Information Model version 1.0.0.0 was the first public release of PDS4 (May 7, 2013)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.1.0.0" ,
                  "valueMeaning": "Information Model version 1.1.0.0 was released on October 1, 2013" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.10.0.0" ,
                  "valueMeaning": "Information Model version 1.10.0.0 was released on March 30, 2018." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.10.1.0" ,
                  "valueMeaning": "Information Model version 1.10.1.0 was released on May 1, 2018" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.11.0.0" ,
                  "valueMeaning": "Information Model version 1.11.0.0 was released on September 28, 2018." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.12.0.0" ,
                  "valueMeaning": "Information Model version 1.12.0.0 was released on March 29, 2019." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.13.0.0" ,
                  "valueMeaning": "Information Model version 1.13.0.0 was released on September 27, 2019" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.14.0.0" ,
                  "valueMeaning": "Information Model version 1.14.0.0 was released on March 27, 2020." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.15.0.0" ,
                  "valueMeaning": "Information Model version 1.15.0.0 was released on September 25, 2020." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.16.0.0" ,
                  "valueMeaning": "Information Model version 1.16.0.0 was released on March 26, 2021." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.17.0.0" ,
                  "valueMeaning": "Information Model version 1.17.0.0 was released on September 24, 2021." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.18.0.0" ,
                  "valueMeaning": "Information Model version 1.18.0.0 was released on March 16, 2022." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.19.0.0" ,
                  "valueMeaning": "Information Model version 1.19.0.0 was released on September 21, 2022" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.2.0.0" ,
                  "valueMeaning": "Information Model version 1.2.0.0 was released on March 18, 2014." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.2.0.1" ,
                  "valueMeaning": "Information Model version 1.2.0.1 was released on March 28, 2014." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.20.0.0" ,
                  "valueMeaning": "Information Model version 1.20.0.0 was released on March 6, 2023." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.3.0.0" ,
                  "valueMeaning": "Information Model version 1.3.0.0 was released on September 10, 2014." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.3.0.1" ,
                  "valueMeaning": "Information Model version 1.3.0.1 was released on September 29, 2014." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.4.0.0" ,
                  "valueMeaning": "Information Model version 1.4.0.0 was released on March 10, 2015." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.5.0.0" ,
                  "valueMeaning": "Information Model version 1.5.0.0 was released on September 30, 2015." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.6.0.0" ,
                  "valueMeaning": "Information Model version 1.6.0.0 was released on March 31, 2016." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.7.0.0" ,
                  "valueMeaning": "Information Model version 1.7.0.0 was released on September 30, 2016." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.8.0.0" ,
                  "valueMeaning": "Information Model version 1.8.0.0 was released on March 31, 2017." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.9.0.0" ,
                  "valueMeaning": "Information Model version 1.9.0.0 was released on September 29, 2017." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1.9.1.0" ,
                  "valueMeaning": "Information Model version 1.9.1.0 was released on December 12, 2017." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.logical_identifier" ,
            "title": "logical_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "A logical identifier identifies the set of all versions of an object. It is an object identifier without a version." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_LID" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_LID" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.product_class" ,
            "title": "product_class" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The product_class attribute provides the name of the product class." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Product_AIP" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_AIP" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Ancillary" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Ancillary" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Attribute_Definition" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Attribute_Definition" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Browse" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Browse" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Bundle" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Bundle" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Class_Definition" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Class_Definition" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Collection" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Collection" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Context" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Context" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_DIP" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_DIP" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_DIP_Deep_Archive" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_DIP_Deep_Archive" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Data_Set_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Data_Set_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Document" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Document" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_External" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_External" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_File_Repository" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_File_Repository" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_File_Text" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_File_Text" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Instrument_Host_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Instrument_Host_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Instrument_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Instrument_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Metadata_Supplemental" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Metadata_Supplemental" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Mission_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Mission_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Native" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Native" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Observational" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Observational" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Proxy_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Proxy_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_SIP" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_SIP" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_SIP_Deep_Archive" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_SIP_Deep_Archive" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_SPICE_Kernel" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_SPICE_Kernel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Service" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Service" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Software" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Software" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Subscription_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Subscription_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Target_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Target_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Thumbnail" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Thumbnail" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Update" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Update" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Volume_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Volume_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Volume_Set_PDS3" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Volume_Set_PDS3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_XML_Schema" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_XML_Schema" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Product_Zipped" ,
                  "valueMeaning": "This is a product that is described by the class definition Product_Zipped" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.title" ,
            "title": "title" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The title attribute provides a short, descriptive text string suitable use as a title or brief description in display or listing of products." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Identification_Area.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([0-9]+)(\\.){1}([0-9]+)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.checksum_manifest_checksum" ,
            "title": "checksum_manifest_checksum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The checksum manifest checksum provides the checksum for the checksum manifest file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_MD5_Checksum" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum" ,
            "minimumCharacters": "32" ,
            "maximumCharacters": "32" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "[0-9a-fA-F]{32}" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.checksum_type" ,
            "title": "checksum_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The checksum type attribute provides the name of the checksum algorithm used to calculate the checksum value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component.pds.transfer_manifest_checksum" ,
            "title": "transfer_manifest_checksum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The transfer manifest checksum provides the checksum for the transfer manifest file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_MD5_Checksum" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum" ,
            "minimumCharacters": "32" ,
            "maximumCharacters": "32" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "[0-9a-fA-F]{32}" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.aip_label_checksum" ,
            "title": "aip_label_checksum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The aip_label_checksum attribute provides the checksum for the Archival Information Package label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_MD5_Checksum" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum" ,
            "minimumCharacters": "32" ,
            "maximumCharacters": "32" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "[0-9a-fA-F]{32}" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.aip_lidvid" ,
            "title": "aip_lidvid" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The aip_lidvid attribute provides the logical_identifier plus version_id, which uniquely identifies a Archival Information Package." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_LIDVID" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_LIDVID" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}::\\p{Nd}+\\.\\p{Nd}+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.checksum_type" ,
            "title": "checksum_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The checksum type attribute provides the name of the checksum algorithm used to calculate the checksum value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "MD5" ,
                  "valueMeaning": "The value of the checksum is produced by the Message-Digest Algorithm (MD5) output of the MD5 Deep Package (see http:\/\/md5deep.sourceforge.net\/)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MD5Deep 4.n" ,
                  "valueMeaning": "The information package is governed by the Message-Digest Algorithm (MD5) output of the MD5 Deep Package Version 4.n (see http:\/\/md5deep.sourceforge.net\/)." ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.manifest_checksum" ,
            "title": "manifest_checksum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The manifest checksum provides the checksum for the manifest file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Information_Package_Component_Deep_Archive.pds.manifest_url" ,
            "title": "manifest_url" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The manifest url provides the URL to the manifest file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.dictionary_type" ,
            "title": "dictionary_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The dictionary_type attribute provides the name of a dictionary category." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Common" ,
                  "valueMeaning": "The dictionary defines classes and attributes common to all labels." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Discipline" ,
                  "valueMeaning": "The dictionary defines classes and attributes specific to a discipline, such as geometry or spectra." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Mission" ,
                  "valueMeaning": "The dictionary defines classes and attributes specific to a mission, flight project, or independent investigation." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.external_property_maps_id" ,
            "title": "external_property_maps_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The external_property_maps_id attribute provides the identifier of a property_maps instance external to this context." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.full_name" ,
            "title": "full_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The full_name attribute provides the complete name for a person and includes titles and suffixes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.last_modification_date_time" ,
            "title": "last_modification_date_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The last_modification_date_time attribute gives the most recent date and time that a change was made." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.ldd_version_id" ,
            "title": "ldd_version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The ldd_version_id attribute provides the version of the Local Data Dictionary." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Ingest_LDD.pds.steward_id" ,
            "title": "steward_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The steward_id attribute provides the abbreviation of the organization that manages the set of registered attributes and classes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.model_id" ,
            "title": "model_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The model_id attribute helps discriminate instrument hardware. For example \"flight\", \"engineering\", or \"proto\" have been used." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.naif_instrument_id" ,
            "title": "naif_instrument_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The naif_instrument_id element provides the numeric ID used within the SPICE system to identify the spacecraft, spacecraft structure or science instrument." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.serial_number" ,
            "title": "serial_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The serial number element provides the assigned manufacturer's serial number." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.subtype" ,
            "title": "subtype" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The subtype attribute is a special type included within the general type. It provides more specific clarifying and\/or supplemental information as to the nature of the type." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the instrument according to its function." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Accelerometer" ,
                  "valueMeaning": "An instrument that measures proper (i.e., its own) acceleration." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Alpha Particle Detector" ,
                  "valueMeaning": "An instrument that measures the number and\/or distribution of alpha particles." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Alpha Particle X-Ray Spectrometer" ,
                  "valueMeaning": "An instrument that bombards a sample with alpha particles and X-rays and measures the energy spectrum of scattered alpha particles and X-rays to determine the sample's elemental composition." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Altimeter" ,
                  "valueMeaning": "An instrument that measures its own altitude above a reference surface." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Anemometer" ,
                  "valueMeaning": "An in situ instrument that measures wind speed." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Atmospheric Sciences" ,
                  "valueMeaning": "A top level category for atmospheric science instruments." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Atomic Force Microscope" ,
                  "valueMeaning": "An instrument that uses atomic forces between a probe and a sample to produce high-resolution topographic scans of the sample." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Barometer" ,
                  "valueMeaning": "An in situ instrument that measures atmospheric pressure." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Biology Experiments" ,
                  "valueMeaning": "An instrument that conducts one or more experiments on samples to determine their potential for biological activity." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Bolometer" ,
                  "valueMeaning": "An instrument that estimates radiation intensity by measuring changes in electrical resistivity as the temperature of its sensor varies in response to the incident power density." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Camera" ,
                  "valueMeaning": "An instrument that records and stores analog images (compare 'imager')." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Cosmic Ray Detector" ,
                  "valueMeaning": "An instrument that detects and\/or measures cosmic rays." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Drilling Tool" ,
                  "valueMeaning": "A tool that drills into samples." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dust" ,
                  "valueMeaning": "An instrument that detects and\/or measures dust." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dust Detector" ,
                  "valueMeaning": "An instrument that detects and\/or measures dust." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Electrical Probe" ,
                  "valueMeaning": "An in situ instrument that measures electrical properties (e.g., conductivity) of a medium into which it is inserted." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Energetic Particle Detector" ,
                  "valueMeaning": " An instrument that detects and\/or measures energetic charged particles." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Gamma Ray Detector" ,
                  "valueMeaning": "An instrument that detects and\/or measures gamma rays." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Gas Analyzer" ,
                  "valueMeaning": "A high-temperature furnace combined with a mass spectrometer that heats a sample and analyzes the mass distribution of the evolved gases." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Gravimeter" ,
                  "valueMeaning": "An instrument that measures the local gravitational field." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Grinding Tool" ,
                  "valueMeaning": "A tool that grinds into samples." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Hygrometer" ,
                  "valueMeaning": "An instrument used to measure the moisture content of its environment." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Imager" ,
                  "valueMeaning": "An instrument that records and stores digital images." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Imaging Spectrometer" ,
                  "valueMeaning": "An instrument that combines the functions of a spectrometer and an imager - i.e., it captures and stores multiple images, each at a slightly different wavelength." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Inertial Measurement Unit" ,
                  "valueMeaning": "An instrument that measures changes in its own velocity and orientation by using a combination of accelerometers, gyroscopes, and\/or other devices." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Infrared Spectrometer" ,
                  "valueMeaning": "An instrument that measures the spectral distribution of infrared radiation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Interferometer" ,
                  "valueMeaning": "An instrument used to measure small displacements, refractive index changes and surface irregularities using interferometry." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Laser Induced Breakdown Spectrometer" ,
                  "valueMeaning": "An instrument that uses an active laser to generate a plasma from a target and then measures the energy spectrum of the evolved plasma." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Magnetometer" ,
                  "valueMeaning": "An instrument that measures the strength and\/or direction of a magnetic field." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Mass Spectrometer" ,
                  "valueMeaning": "An instrument that measures the number of particles in a sample as a function of their mass." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Microscope" ,
                  "valueMeaning": "An instrument used to view objects that are too small to be seen by the naked eye." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Microwave Spectrometer" ,
                  "valueMeaning": "An instrument that measures the spectral distribution of microwave radiation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Moessbauer Spectrometer" ,
                  "valueMeaning": "An instrument that uses the Mossbauer effect to determine the abundance of Fe-bearing minerals in a sample." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Naked Eye" ,
                  "valueMeaning": "Observations made with the naked eye and recorded in a data product." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Neutral Particle Detector" ,
                  "valueMeaning": "An instrument that detects and\/or measures neutral particles." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Neutron Detector" ,
                  "valueMeaning": "An instrument that measures the number and\/or energy distribution of neutrons." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Particle Detector" ,
                  "valueMeaning": "An instrument that detects and\/or measures charged particles." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Photometer" ,
                  "valueMeaning": "An instrument that measures radiation intensity (e.g., of visible light), sometimes with the goal of inferring optical properties of materials." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Plasma Analyzer" ,
                  "valueMeaning": "An instrument that measures the spectral distribution of energy in a low-frequency plasma." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Plasma Detector" ,
                  "valueMeaning": "An instrument that detects and\/or measures low energy charged particles." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Plasma Wave Spectrometer" ,
                  "valueMeaning": "An instrument that measures the energy distribution in a low-frequency plasma." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Polarimeter" ,
                  "valueMeaning": "An instrument used to measure the angle of rotation caused by passing polarized electromagnetic radiation through an optically active substance." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radar" ,
                  "valueMeaning": "An instrument that transmits and receives radio signals for the purpose of detecting, determining the range (distance) to, velocity of, and\/or direction of one or more distant targets." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio Science" ,
                  "valueMeaning": "An instrument suite used to conduct measurements at radio frequencies." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio Spectrometer" ,
                  "valueMeaning": "An instrument that measures the spectral distribution of electromagnetic radiation at radio frequencies." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio Telescope" ,
                  "valueMeaning": " An instrument used to focus and capture radio waves." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio-Radar" ,
                  "valueMeaning": "An instrument used to conduct measurements at radio frequencies." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radiometer" ,
                  "valueMeaning": "An instrument which measures the radiant flux of electromagnetic radiation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Reflectometer" ,
                  "valueMeaning": "An instrument that measures the reflectance of surfaces.  An electron reflectometer measures the properties of electrons trapped along magnetic field lines to infer the strength and direction of the field remotely." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Regolith Properties" ,
                  "valueMeaning": "A top level category for the science instruments associated with the Geosciences." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Robotic Arm" ,
                  "valueMeaning": "A tool used to place in-situ instruments on surface rocks or soil, dig into a surface, and\/or to collect surface samples for other instruments to analyze on a spacecraft." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Seismometer" ,
                  "valueMeaning": "An instrument that measure motion of the ground." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Small Bodies Sciences" ,
                  "valueMeaning": "A top level category for the science instruments associated with Small Bodies." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spectrograph" ,
                  "valueMeaning": "An instrument that separates light into a frequency spectrum and records the signal using a camera." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spectrograph Imager" ,
                  "valueMeaning": "See Imaging Spectrometer." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spectrometer" ,
                  "valueMeaning": "An instrument that measures a spectrum, reporting intensity as a function of wavelength, frequency, energy, momentum, or mass." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Thermal Imager" ,
                  "valueMeaning": "An instrument that captures an image at thermal infrared wavelengths." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Thermal Probe" ,
                  "valueMeaning": "An in situ instrument that measures thermal properties (e.g., temperature) at one or more points along its length." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Thermometer" ,
                  "valueMeaning": "An instrument that measures temperature." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ultraviolet Spectrometer" ,
                  "valueMeaning": "An instrument that measures the spectral distribution of ultraviolet radiation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Weather Station" ,
                  "valueMeaning": "An instrument that collects data for the scientific study of weather and weather-related phenomena such as (but not limited to) temperature, pressure, wind speed, wind direction, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Wet Chemistry Laboratory" ,
                  "valueMeaning": "An instrument that mixes soil samples with solutions to measure material properties such as pH, conductivity, oxidation-reduction potential, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "X-ray Detector" ,
                  "valueMeaning": "An instrument that detects and\/or measures X-rays." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "X-ray Diffraction Spectrometer" ,
                  "valueMeaning": "An instrument that uses a beam of X-rays to probe the internal structure of a powdered sample and identify its mineral composition." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "X-ray Fluorescence Spectrometer" ,
                  "valueMeaning": "An instrument that measures the emission of secondary X-rays to determine the elemental composition of a sample that has been irradiated with primary X-rays." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.instrument_host_version_id" ,
            "title": "instrument_host_version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The instrument_host_version_id attribute provides the version of the instrument host." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.naif_host_id" ,
            "title": "naif_host_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The naif_host_id element provides the numeric ID used within the SPICE system to identify the spacecraft, spacecraft structure or science instrument." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.serial_number" ,
            "title": "serial_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The serial number attribute provides the manufacturer's serial number assigned to an instrument host." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the instrument host.  When more than one value is correct, the value with the finest granularity should be selected.  That is, choose \"rover\" rather than \"spacecraft\" when both would be correct since rover more narrowly defines the type of instrument host." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Aircraft" ,
                  "valueMeaning": "An airborne observatory carried on a powered, heavier than air vessel supporting observations, measurements, and scientific experiments during flight." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Balloon" ,
                  "valueMeaning": "A balloon-borne observatory, typically consisting of a gondola structure carrying one or more telescopes and instruments, borne aloft by an unpowered or minimially powered lighter-than-atmosphere balloon for a limited observing period." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Earth Based" ,
                  "valueMeaning": "The Instrument Host is classified as being of type Earth Based" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Earth-based" ,
                  "valueMeaning": "The instrument host is on or near the surface of Earth (no more than 100 km altitude above the surface)." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Lander" ,
                  "valueMeaning": "A spacecraft designed for descent to and operation at a single fixed point on the surface of a celestial body." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Rover" ,
                  "valueMeaning": "A spacecraft designed for descent to and mobile operation on the surface of a celestial body." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spacecraft" ,
                  "valueMeaning": "A vehicle designed for travel in outer space ('outer space' is the region more than 100 km above the Earth's surface, a convention accepted in many contexts -- see http:\/\/en.wikipedia.org\/wiki\/Outer_space)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Suborbital Rocket" ,
                  "valueMeaning": "A Suborbital Rocket is an instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([0-9]+)(\\.){1}([0-9]+)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host_PDS3.pds.instrument_host_desc" ,
            "title": "instrument_host_desc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument_host_desc provides a description of an instrument host" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host_PDS3.pds.instrument_host_id" ,
            "title": "instrument_host_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument_host_id attribute provides a unique identifier for the host on which an instrument is located. This host can be either a spacecraft or an earth base (e.g. earth)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host_PDS3.pds.instrument_host_name" ,
            "title": "instrument_host_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument_host_name attribute provides the full name of the platform or facility upon which an instrument or other device is mounted. For example, the host can be a spacecraft, a ground-based telescope, or a laboratory." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_Host_PDS3.pds.instrument_host_type" ,
            "title": "instrument_host_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument_host_type attribute provides the type of host on which an instrument is based. For example instrument is located on a spacecraft instrument_host_type attribute would have the value SPACECRAFT." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_PDS3.pds.instrument_desc" ,
            "title": "instrument_desc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument_desc attribute describes a given instrument." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_PDS3.pds.instrument_id" ,
            "title": "instrument_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument id provides a formal name used to refer to an instrument." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_PDS3.pds.instrument_name" ,
            "title": "instrument_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument_name attribute provides a unique name for an instrument." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_PDS3.pds.instrument_serial_number" ,
            "title": "instrument_serial_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument serial number element provides the manufacturer's serial number assigned to an instrument. This number may be used to uniquely identify a particular instrument for tracing its components or determining its calibration history, for example." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_PDS3.pds.instrument_type" ,
            "title": "instrument_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instrument_type attribute identifies the type of an instrument. Example values: POLARIMETER SPECTROMETER" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Instrument_PDS3.pds.instrument_version_id" ,
            "title": "instrument_version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The Instrument_Version_Id element identifies the specific model of an instrument used to obtain data. For example, this keyword could be used to distinguish between an engineering model of a camera used to acquire test data, and a flight model of a camera used to acquire science data during a mission." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Internal_Reference.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The comment attribute provides one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Internal_Reference.pds.lid_reference" ,
            "title": "lid_reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The lid_reference attribute provides the logical_identifier for a  product." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_LID" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_LID" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Internal_Reference.pds.lidvid_reference" ,
            "title": "lidvid_reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The lidvid_reference attribute provides the logical_identifier plus version_id, which uniquely identifies a product." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_LIDVID" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_LIDVID" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "urn(:[\\p{Ll}\\p{Nd}\\-._]+){3,5}::\\p{Nd}+\\.\\p{Nd}+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Internal_Reference.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Inventory.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "inventory_has_member_product" ,
                  "valueMeaning": "The collection inventory has member products identified by either LIDVID or LID references" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.start_date" ,
            "title": "start_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The start_date attribute provides the date when an activity began." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.stop_date" ,
            "title": "stop_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The stop_date attribute provides the date when an activity ended." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the investigation according to its scope." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Field Campaign" ,
                  "valueMeaning": "A set of experiments and\/or observations with a clearly defined purpose that is coordinated among one or more individuals and\/or one or more organizations. The campaign is characterized primarily by its in situ terrestrial field work." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Individual Investigation" ,
                  "valueMeaning": "A set of experiments and\/or observations with a clearly defined purpose that is under the direction of a single individual. For example, a series of related laboratory experiments\/observations conducted by a small university team and funded through a single proposal could be an Individual Investigation. Library research by one person on previously published results to distill common conclusions could also be an Individual Investigation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Mission" ,
                  "valueMeaning": "A set of experiments and\/or observations with a clearly defined purpose that is under the direction of an organization (such as a national space agency) and uses one or more vehicles of similar design. A mission is usually conducted by a national or international space agency using a small number (often one) of spacecraft especially designed and built for the purpose. For example: (1) the NASA Voyager mission launched two spacecraft to Jupiter and Saturn; (2) the Deep Impact (DI) mission launched a spacecraft, part of which impacted the comet Tempel 2; and (3) the EPOXI mission redefined the objectives of the surviving DI hardware for further exploration of the solar system." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Observing Campaign" ,
                  "valueMeaning": "A set of experiments and\/or observations with a clearly defined purpose that is coordinated among one or more individuals and\/or one or more organizations. The campaign is characterized primarily by its remote sensing observations. For example, the International Halley Watch mobilized observatories around the world for collection of data during the most recent apparition of Comet Halley. The Shoemaker-Levy-9 (SL9) campaign used both Earth-based and spacecraft instruments to monitor the SL9 impact on Jupiter." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Other Investigation" ,
                  "valueMeaning": "Any other set of experiments and\/or observations with a unifying theme." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation_Area.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Investigation_Area.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies Investigation_Area according to the scope of the investigation.." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Field Campaign" ,
                  "valueMeaning": "A set of experiments and\/or observations with a clearly defined purpose that is coordinated among one or more individuals and\/or one or more organizations. The campaign is characterized primarily by its in situ terrestrial field work." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Individual Investigation" ,
                  "valueMeaning": "A set of experiments and\/or observations with a clearly defined purpose that uses existing facilities and is under the direction of a single individual. For example, a series of related laboratory experiments\/observations conducted by a small university team and funded through a single proposal could be an Individual Investigation. Library research by one person on previously published results to distill common conclusions could also be an Individual Investigation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Mission" ,
                  "valueMeaning": "A set of experiments and\/or observations with a clearly defined purpose that occupies the designated resources for all (or at least a significant fraction) of the available time. A mission is usually conducted by a national or international space agency using a small number (often one) of spacecraft especially designed and built for the purpose. For example: (1) the NASA Voyager mission launched two spacecraft to Jupiter and Saturn; (2) the Deep Impact (DI) mission launched a spacecraft, part of which impacted the comet Tempel 2; and (3) the EPOXI mission redefined the objectives of the surviving DI hardware for further exploration of the solar system." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Observing Campaign" ,
                  "valueMeaning": "A set of experiments and\/or observations with a clearly defined purpose that uses (primarily) existing facilities, but not exclusively. After (and possibly during) the campaign other investigations are carried out using the same facilities. For example, the International Halley Watch mobilized observatories around the world for collection of data during the most recent apparition of Comet Halley. The Shoemaker-Levy-9 (SL9) campaign used both Earth-based and spacecraft instruments to monitor the SL9 impact on Jupiter." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Other Investigation" ,
                  "valueMeaning": "Any other set of experiments and\/or observations with a unifying theme." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.id_reference_to" ,
            "title": "id_reference_to" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The id_reference_to provides the identifier of the ending object in a one  directional relationship." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Reference.pds.id_reference_type" ,
            "title": "id_reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The id_reference_type attribute provides the name of an association between two objects." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "has_component" ,
                  "valueMeaning": "The referenced digital object is a component of a composite structure." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "has_primary_component" ,
                  "valueMeaning": "The referenced digital object is the primary component of a composite structure." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_from" ,
            "title": "id_reference_from" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The id_reference_from provides the identifier of the starting object in a  one directional relationship." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_to" ,
            "title": "id_reference_to" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The id_reference_to provides the identifier of the ending object in a one  directional relationship." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_ID_Relation.pds.id_reference_type" ,
            "title": "id_reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The id_reference_type attribute provides the name of an association between two objects." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "has_axis_values" ,
                  "valueMeaning": "The referenced description object provides values on an axis." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "has_backplane" ,
                  "valueMeaning": "The referenced description object describes a backplane." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "has_column_headers" ,
                  "valueMeaning": "The referenced description object provides column headers for the referring description object." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "has_display_settings" ,
                  "valueMeaning": "The referenced description object describes how the digital object should be displayed on a display device." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "has_spectral_characteristics" ,
                  "valueMeaning": "The referenced description object describes the spectral characteristics of the referring description object.." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.local_identifier_reference" ,
            "title": "local_identifier_reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier_reference attribute provides the value of the local_identifier of the entity described by the referencing class. Note that a local_identifier attribute, with the same value as this local_identifier_reference, must be present within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier_Reference" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier_Reference" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Local_Internal_Reference.pds.local_reference_type" ,
            "title": "local_reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_reference_type attribute provides the name of an association between an entity identified by a local_identifier_reference and another corresponding entity identified by a local_identifier. The values for the local_reference_type are expected to be enumerated for appropriate contexts in the Schematron files of local (i.e., discipline and mission) data dictionaries." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Mission_PDS3.pds.mission_desc" ,
            "title": "mission_desc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The mission_desc attribute summarizes major aspects of a planetary mission or project, including the number and type of spacecraft, the target body or bodies and major accomplishments." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Mission_PDS3.pds.mission_name" ,
            "title": "mission_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The mission_name attribute identifies a major planetary mission or project. A given planetary mission may be associated with one or more spacecraft." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Mission_PDS3.pds.mission_objectives_summary" ,
            "title": "mission_objectives_summary" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The mission_objectives_summary attribute describes the major scientific objectives of a planetary mission or project." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Mission_PDS3.pds.mission_start_date" ,
            "title": "mission_start_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The mission_start_date attribute provides the date of the beginning of a mission in UTC system format." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Mission_PDS3.pds.mission_stop_date" ,
            "title": "mission_stop_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The mission_stop_date attribute provides the date of the end of a mission in UTC system format." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Modification_Detail.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Modification_Detail.pds.modification_date" ,
            "title": "modification_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The modification_date attribute provides date the modifications were completed" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Modification_Detail.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([0-9]+)(\\.){1}([0-9]+)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.NSSDC.pds.medium_type" ,
            "title": "medium_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The medium_type attribute identifies the physical storage medium for a data volume. Examples: CD-ROM, CARTRIDGE TAPE." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.NSSDC.pds.nssdc_collection_id" ,
            "title": "nssdc_collection_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "An NSSDC Collection ID is an NSSDC assigned identifier for a collection of PDS datasets." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Node.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Node.pds.institution_name" ,
            "title": "institution_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The institution_name attribute provides the name of the associated institution." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "[a-zA-Z]{1}([-\/, ._a-zA-Z0-9]*)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Node.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the Node is known." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Cartography and Imaging Sciences Discipline" ,
                  "valueMeaning": "The Node has name Cartography and Imaging Sciences Discipline" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Engineering" ,
                  "valueMeaning": "The Node has name Engineering" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Geosciences" ,
                  "valueMeaning": "The Node has name Geosciences" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Imaging" ,
                  "valueMeaning": "The Node has name Imaging" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Management" ,
                  "valueMeaning": "The Node has name Management" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Navigation and Ancillary Information Facility" ,
                  "valueMeaning": "The Node has name Navigation and Ancillary Information Facility" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Atmospheres" ,
                  "valueMeaning": "The Node has name Planetary Atmospheres" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Plasma Interactions" ,
                  "valueMeaning": "The Node has name Planetary Plasma Interactions" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Rings" ,
                  "valueMeaning": "The Node has name Planetary Rings" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Science Archive" ,
                  "valueMeaning": "The Node has name Planetary Science Archive" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio Science" ,
                  "valueMeaning": "The Node has name Radio Science" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ring-Moon Systems" ,
                  "valueMeaning": "The Node has name Ring-Moon Systems" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Small Bodies" ,
                  "valueMeaning": "The Node has name Small Bodies" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.bit_mask" ,
            "title": "bit_mask" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The bit mask attribute is a series of ASCII binary digits identifying the active bits in a value; it has exactly the same number of bits as the array element to which it is applied. The bit mask must be specified from most significant to least significant bit (left to right)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Numeric_Base2" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Numeric_Base2" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "[0-1]{1,255}" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.maximum" ,
            "title": "maximum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum attribute provides the largest value which appears in the stored array after application of any bit mask (Special_Constants values are excluded)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.maximum_scaled_value" ,
            "title": "maximum_scaled_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_scaled_value attribute provides the maximum value after application of scaling_factor and value_offset (see their definitions; maximum_scaled_value is the maximum of Ov)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.md5_checksum" ,
            "title": "md5_checksum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The md5_checksum attribute is the 32-character hexadecimal number computed using the MD5 algorithm for the contiguous bytes of single digital object (as stored) or for an entire file." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_MD5_Checksum" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_MD5_Checksum" ,
            "minimumCharacters": "32" ,
            "maximumCharacters": "32" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([a-f0-9]{32})" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.mean" ,
            "title": "mean" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The mean attribute provides the sum of the stored array element values (after application of any bit mask) divided by the number of elements (Special_Constants values are excluded from both the sum and the count)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.median" ,
            "title": "median" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The median attribute provides the number separating the larger half of stored array element values from the algebraically smaller half after application of any bit mask (Special_Constants values are excluded from the sort)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.minimum" ,
            "title": "minimum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum attribute provides the algebraically smallest value which appears in the stored array after application of any bit mask (Special_Constants values are excluded)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.minimum_scaled_value" ,
            "title": "minimum_scaled_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_scaled_value attribute provides the minimum value after application of scaling_factor and value_offset (see their definitions; minimum_scaled_value is the minimum of Ov)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Object_Statistics.pds.standard_deviation" ,
            "title": "standard_deviation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The standard_deviation attribute provides the standard deviation of the stored array element values after application of any bit mask (Special_Constants values are excluded from the computation)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Observing_System.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Observing_System.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Observing_System_Component.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the observing system component according to its function." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Airborne" ,
                  "valueMeaning": "The physical object that transports a platform by or through air." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Aircraft" ,
                  "valueMeaning": "An airborne observatory carried on a powered, heavier than air vessel supporting observations, measurements, and scientific experiments during flight." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Artificial Illumination" ,
                  "valueMeaning": "The observing system component provides artificial illumination" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Balloon" ,
                  "valueMeaning": "A balloon-borne observatory, typically consisting of a gondola structure carrying one or more telescopes and instruments, borne aloft by an unpowered or minimially powered lighter-than-atmosphere balloon for a limited observing period." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Computer" ,
                  "valueMeaning": "The observing system component is a processor embedded in the observing configuration, that manipulates or regulates the data prior to downlink." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Facility" ,
                  "valueMeaning": "The observing system component is a facility." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Host" ,
                  "valueMeaning": "The observing system component is a host or a member in a chain of hosts that ultimately contains an instrument that collects data." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Instrument" ,
                  "valueMeaning": "The observing system component is an instrument" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Laboratory" ,
                  "valueMeaning": "The observing system component is a laboratory" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Literature Search" ,
                  "valueMeaning": "The observing system component is a literature search" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Naked Eye" ,
                  "valueMeaning": "The observing system component is the unaided eye of a person" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Observatory" ,
                  "valueMeaning": "The observing system component is an observatory" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spacecraft" ,
                  "valueMeaning": "The observing system component is a spacecraft" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Suborbital Rocket" ,
                  "valueMeaning": "A Suborbital Rocket is an instrument-carrying rocket designed to take measurements and perform scientific experiments during its sub-orbital flight." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Telescope" ,
                  "valueMeaning": "The observing system component is a telescope" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Other.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.affiliation_type" ,
            "title": "affiliation_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The affiliation type attribute describes the type of relationship an individual has with the PDS.  Individuals with PDS affiliations are generally listed in the PDS Phone Book." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Affiliate" ,
                  "valueMeaning": "The individual has a relationship with PDS that is more substantial than 'none' or 'data user'and is not described by one of the other enumerated values" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Data Provider" ,
                  "valueMeaning": "The individual prepares and\/or delivers data to PDS" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Manager" ,
                  "valueMeaning": "The individual is a manager within PDS" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Technical Staff" ,
                  "valueMeaning": "The individual works for PDS in a technical capacity." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.alternate_telephone_number" ,
            "title": "alternate_telephone_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The telephone_number attribute provides a telephone number in  international notation in compliance with the E.164 telephone number format recommendation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.electronic_mail_address" ,
            "title": "electronic_mail_address" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The electronic mail address attribute provides a multi-part email address: the first part (the user name), which identifies a unique user, is separated by an \"at sign\"  from the host name, which uniquely identifies the mail server." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.institution_name" ,
            "title": "institution_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The institution_name attribute provides the name of the associated institution." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "[a-zA-Z]{1}([-\/, ._a-zA-Z0-9]*)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.phone_book_flag" ,
            "title": "phone_book_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The phone_book_flag attribute indicates whether or not this person should be included in the phone book." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.postal_address_text" ,
            "title": "postal_address_text" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The postal address text attribute provides a mailing address." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.registration_date" ,
            "title": "registration_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The registration_date attribute provides the date of registration within the PDS system." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.sort_name" ,
            "title": "sort_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The sort name attribute provides a string to be used in ordering. For people, the last name (surname) is typically first, followed by a comma and then other names." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.team_name" ,
            "title": "team_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The team_name attribute provides the name of a group of individuals working together." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Cartography and Imaging Sciences Discipline" ,
                  "valueMeaning": "Team name is Cartography and Imaging Sciences Discipline" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Engineering" ,
                  "valueMeaning": "Team name is Engineering" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Geosciences" ,
                  "valueMeaning": "Team name is Geosciences" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Headquarters" ,
                  "valueMeaning": "Team name is Headquarters" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Imaging" ,
                  "valueMeaning": "The Node has name Imaging" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Management" ,
                  "valueMeaning": "Team name is Management" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "National Space Science Data Center" ,
                  "valueMeaning": "Team name is National Space Science Data Center (until 2014) or National Sapce Science Data Coordinated Archive" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Navigation and Ancillary Information Facility" ,
                  "valueMeaning": "Team name is Navigation and Ancillary Information Facility" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Atmospheres" ,
                  "valueMeaning": "Team name is Planetary Atmospheres" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Plasma Interactions" ,
                  "valueMeaning": "Team name is Planetary Plasma Interactions" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Rings" ,
                  "valueMeaning": "The Node has name Planetary Rings" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio Science" ,
                  "valueMeaning": "Team name is Radio Science" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ring-Moon Systems" ,
                  "valueMeaning": "Team name is Ring-Moon Systems" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Small Bodies" ,
                  "valueMeaning": "Team name is Small Bodies" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Affiliate.pds.telephone_number" ,
            "title": "telephone_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The telephone_number attribute provides a telephone number in  international notation in compliance with the E.164 telephone number format recommendation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.electronic_mail_address" ,
            "title": "electronic_mail_address" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The electronic mail address attribute provides a multi-part email address: the first part (the user name), which identifies a unique user, is separated by an \"at sign\"  from the host name, which uniquely identifies the mail server." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.registration_date" ,
            "title": "registration_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The registration_date attribute provides the date of registration within the PDS system." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.PDS_Guest.pds.sort_name" ,
            "title": "sort_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The sort name attribute provides a string to be used in ordering. For people, the last name (surname) is typically first, followed by a comma and then other names." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Packed_Data_Fields.pds.bit_fields" ,
            "title": "bit_fields" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The bit_fields attribute provides the number of defined bit fields (Field_Bit definitions) within the Packed_Data_Field." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Packed_Data_Fields.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.object_length" ,
            "title": "object_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The object_length attribute provides the length of the digital object in bytes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.offset" ,
            "title": "offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The offset attribute provides the displacement of the object starting position from the beginning of the parent structure (file, record, etc.).  If there is no displacement, offset=0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Parsable_Byte_Stream.pds.parsing_standard_id" ,
            "title": "parsing_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The parsing_standard_id attribute provides the formal name of a standard used for the structure of a Parsable Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.data_regime" ,
            "title": "data_regime" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The data_regime attribute provides the wavelength (or an analogous concept for things like particle detectors) of the observations, stated as a category." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Dust" ,
                  "valueMeaning": "Particles ranging in size from a few molecules to approximately 0.1 micrometer in diameter." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Electric Field" ,
                  "valueMeaning": "A vector force field controlled primarily by the presence of electrons and\/or ions" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Electrons" ,
                  "valueMeaning": "Subatomic particles with negative elementary charge." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Far Infrared" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 1 THz - 10 THz (frequency), 30 micrometers - 300 micrometers (wavelength), or 4 meV - 40 meV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Gamma Ray" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: greater than 10 EHz (frequency), less than 0.01 nm (wavelength), or more than 100 keV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Infrared" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 300 GHz - 405 THz (frequency), 750 nm - 1 mm (wavelength), or 1.24 meV - 1.7 eV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ions" ,
                  "valueMeaning": "Atoms or molecules in which the number of electrons and protons is unequal, giving them a net negative or positive electric charge." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Magnetic Field" ,
                  "valueMeaning": "A vector force field produced by moving electric charges (currents) and\/or the intrinsic magnetic properties of materials" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Microwave" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 300 MHz - 300 GHz (frequency), 1 mm - 1 m (wavelength), or 12 micro eV - 1.2 meV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Millimeter" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 30 GHz - 300 GHz (frequency), 1 mm - 10 mm (wavelength), or 120 micro eV - 1.2 meV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Near Infrared" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 300 THz - 1.5 PHz (frequency), 1 micrometer - 5 micrometer (wavelength), or 1 eV - 6 eV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Particles" ,
                  "valueMeaning": "Discrete (but small) objects that can be characterized by a few simple physical properties such as volume and mass." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Pressure" ,
                  "valueMeaning": "Measurement of ambient atmospheric pressure." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 3 Hz - 300 GHz (frequency), 1 mm - 100,000 km (wavelength), or 12 feV - 1.2 meV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Sub-Millimeter" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 0.3 THz - 3 THz (frequency), 0.1 mm - 1 mm (wavelength), or 1.2 meV - 12 meV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Temperature" ,
                  "valueMeaning": "Measurement of ambient temperature." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ultraviolet" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 790 THz - 30 PHz (frequency), 10 nm - 390 nm (wavelength), or 3 eV - 120 eV (photon energy)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Visible" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 405 THz - 790 THz (frequency), 390 nm - 750 nm (wavelength), or 1.7 eV - 3.3 eV (photon energy) " ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "X-Ray" ,
                  "valueMeaning": "Electromagnetic radiation in the approximate range: 30 PHz - 30 EHz (frequency), 0.01 nm - 10 nm (wavelength), or 120 eV - 120 keV (photon energy))" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.processing_level" ,
            "title": "processing_level" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The processing_level attribute provides a broad classification of data processing level." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Calibrated" ,
                  "valueMeaning": "Data converted to physical units, which makes values independent of the instrument." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Derived" ,
                  "valueMeaning": "Results that have been distilled from one or more calibrated data products (for example, maps, gravity or magnetic fields, or ring particle size distributions).  Supplementary data, such as calibration tables or tables of viewing geometry, used to interpret observational data should also be classified as 'derived' data if not easily matched to one of the other three categories." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Partially Processed" ,
                  "valueMeaning": "Data that have been processed beyond the raw stage but which have not yet reached calibrated status." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Raw" ,
                  "valueMeaning": "Original data from an instrument. If compression, reformatting, packetization, or other translation has been applied to facilitate data transmission or storage, those processes will be reversed so that the archived data are in a PDS approved archive format." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Telemetry" ,
                  "valueMeaning": "An encoded byte stream used to transfer data from one or more instruments to temporary storage where the raw instrument data will be extracted." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.processing_level_id" ,
            "title": "processing_level_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The processing_level_id attribute provides a broad indication of data processing level." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Calibrated" ,
                  "valueMeaning": "Data converted to physical units, which makes values independent of the instrument." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Derived" ,
                  "valueMeaning": "Results that have been distilled from one or more calibrated data products (for example, maps, gravity or magnetic fields, or ring particle size distributions). Supplementary data, such as calibration tables or tables of viewing geometry, used to interpret observational data should also be classified as 'derived' data if not easily matched to one of the other three non-telemetry categories." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Partially Processed" ,
                  "valueMeaning": "Data that have been processed beyond the raw stage but which have not yet reached calibrated status." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Raw" ,
                  "valueMeaning": "Original data from an instrument. If compression, reformatting, packetization, or other translation has been applied to facilitate data transmission or storage, those processes will be reversed so that the archived data are in a PDS approved archive format." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Telemetry" ,
                  "valueMeaning": "An encoded byte stream used to transfer data from one or more instruments to temporary storage where the raw instrument data will be extracted." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.purpose" ,
            "title": "purpose" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The purpose attribute provides an indication of the primary purpose of the observations included." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Calibration" ,
                  "valueMeaning": "Data collected to determine the relationship between measurement values and physical units." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Checkout" ,
                  "valueMeaning": "Data collected during operational tests" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Engineering" ,
                  "valueMeaning": "Data collected about support systems and structures, which are ancillary to the primary measurements." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Navigation" ,
                  "valueMeaning": "Data collected to support navigation" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Observation Geometry" ,
                  "valueMeaning": "Data used to compute instrument observation geometry, such as SPICE kernels." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Science" ,
                  "valueMeaning": "Data collected primarily to answer questions about the targets of the investigation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Supporting Observation" ,
                  "valueMeaning": "A science observation that was acquired to provide support for another science observation (e.g., a context image for a very high resolution observation, or an image intended to support an observation by a spectral imager)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Primary_Result_Summary.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Altimetry" ,
                  "valueMeaning": "Measurement of altitude." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Astrometry" ,
                  "valueMeaning": "Precise measurement of positions of heavenly bodies." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Count" ,
                  "valueMeaning": "A recording of the number of discrete events" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "E\/B-Field Vectors" ,
                  "valueMeaning": "Arrays populated by values of the electric\/magnetic field in three orthogonal directions." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Gravity Model" ,
                  "valueMeaning": "An approximation to the gravity field of an object derived from measurement and\/or theory" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Image" ,
                  "valueMeaning": "A two-dimensional representation of a field of view" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Lightcurves" ,
                  "valueMeaning": "This value indicates data products containing time-sequences of magnitude measurements for one or more individual targets (typically asteroids or comets)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Map" ,
                  "valueMeaning": "A two-dimensional representation of the plan view of a surface" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteorology" ,
                  "valueMeaning": "Measurements of the meteorological conditions of an atmosphere such as pressure, temperature, wind speed, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Null Result" ,
                  "valueMeaning": "Measurements which failed." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Occultation" ,
                  "valueMeaning": "Measurements conducted when one celestial body progressively hides another" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Photometry" ,
                  "valueMeaning": "Measurement of light flux" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Physical Parameters" ,
                  "valueMeaning": "This value indicates data products containing compilations of one or more physical parameters - like albedo, density, absolute magnitude, etc. It is generally used for data that combines these highly-derived results from multiple sources." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Polarimetry" ,
                  "valueMeaning": "Measurement of the polarization state of radiation." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radiometry" ,
                  "valueMeaning": "Measurement of the radiation coming from a body, usually at infrared and longer wavelengths" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Reference" ,
                  "valueMeaning": "A Reference product provides ancillary information needed to support the use of another data product.  Reference products include things like tables of foot notes or lists of detailed citations, and are usually associated with data products compiled from the published literature." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Shape Model" ,
                  "valueMeaning": "An approximation to the shape of an object derived from measurements and\/or theory" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spectrum" ,
                  "valueMeaning": "An array containing values of a dependent variable as a function of an independent variable." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.external_namespace_id" ,
            "title": "external_namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The external_namespace_id attribute provides a namespace_id external to this context." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.identifier" ,
            "title": "identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The identifier attribute provides the formal name used to refer to an object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.instance_id" ,
            "title": "instance_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instance_id attribute provides an identifier for the single occurrence of an object, for example an XPath." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.model_object_id" ,
            "title": "model_object_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The model_object_id attribute provides the unique identifier of a class, attribute, or value that is defined in the information model." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.model_object_type" ,
            "title": "model_object_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The model_object_type attribute provides a classification for a modeled object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map.pds.title" ,
            "title": "title" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The title attribute provides a short, descriptive text string suitable use as a title or brief description in display or listing of products." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_map_subtype" ,
            "title": "property_map_subtype" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The property_map_subtype attribute indicates the subcategory of the property map." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_map_type" ,
            "title": "property_map_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The property_map_type attribute indicates the category of the property map." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Nuance" ,
                  "valueMeaning": "A subtle difference or distinction in meaning of a defined attribute." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Query Model" ,
                  "valueMeaning": "A list of defined attributes to be used for a specific query." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Rationale" ,
                  "valueMeaning": "A statement of reasons about the definition of an attribute." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Synonym" ,
                  "valueMeaning": "An attribute in an external standard that has thesame or nearly the same meaning." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Velocity Variable" ,
                  "valueMeaning": "A list of defined attributes to have values provided during product label generation." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_name" ,
            "title": "property_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The property name attribute provides a word or a combination of words by which a property is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Map_Entry.pds.property_value" ,
            "title": "property_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The property value attribute provides the value assigned to a property." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.external_property_map_id" ,
            "title": "external_property_map_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The external_property_map_id attribute provides the identifier of a property_map instance external to this context." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.identifier" ,
            "title": "identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The identifier attribute provides the formal name used to refer to an object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Property_Maps.pds.title" ,
            "title": "title" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The title attribute provides a short, descriptive text string suitable use as a title or brief description in display or listing of products." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the quaternion according to how its elements are stored and used." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "SPICE" ,
                  "valueMeaning": "The quaternion has components zero through three, with the 0th component being the scalar, and the 1st, 2nd and 3rd being the vector components." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Spacecraft Telemetry" ,
                  "valueMeaning": "The quaternion has components one through four, with the 4th component being the scalar, and the 1st, 2nd and 3rd being the vector components." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.data_type" ,
            "title": "data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The data_type attribute provides the hardware representation used to store a value in Quaternion_Component (see PDS Standards Reference section \"Attribute Data Types\")." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII_Real" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Real" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.sequence_number" ,
            "title": "sequence_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sequence_number attribute provides a number that is used to order axes in an array." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "16" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Quaternion_Component.pds.value" ,
            "title": "value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The value attribute provides a single, allowed numerical or character string value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Record.pds.fields" ,
            "title": "fields" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The fields attribute provides a count of the total number of scalar fields directly associated with a table record.  Fields within groups within the record are not included in this count." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Record.pds.groups" ,
            "title": "groups" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The groups attribute provides a count of the total number of groups directly associated with a table record.  Groups within groups within the record are not included in this count." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Record_Binary.pds.record_length" ,
            "title": "record_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The record_length attribute provides the length of a record, including a record delimiter, if present." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Record_Character.pds.record_length" ,
            "title": "record_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The record_length attribute provides the length of a record, including the record delimiter." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Record_Delimited.pds.maximum_record_length" ,
            "title": "maximum_record_length" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_record_length attribute provides the maximum length of a record, including the record delimiter." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Resource.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Resource.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Resource.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the Resource according to its function." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Information.Agency" ,
                  "valueMeaning": "The web resource provides information about an agency." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Information.Instrument" ,
                  "valueMeaning": "The web resource provides information about an instrument" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Information.Instrument_Host" ,
                  "valueMeaning": "The web resource provides information about an instrument host" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Information.Investigation" ,
                  "valueMeaning": "The web resource provides information about an investigation" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Information.Node" ,
                  "valueMeaning": "The web resource provides information about a node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Information.Person" ,
                  "valueMeaning": "The web resource provides information about a person" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Information.Resource" ,
                  "valueMeaning": "The web resource provides information about a generic resource" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Information.Science_Portal" ,
                  "valueMeaning": "The web resource provides information about a science portal" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Information.Target" ,
                  "valueMeaning": "The web resource provides information about a target" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "System.Browse" ,
                  "valueMeaning": "The system resource provides browse functionality." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "System.Directory_Listing" ,
                  "valueMeaning": "The system resource provides a directory listing." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "System.Registry_Query" ,
                  "valueMeaning": "The system resource provides registry query functionality." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "System.Search" ,
                  "valueMeaning": "The system resource provides search functionality." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "System.Transform" ,
                  "valueMeaning": "The system resource provides transform functionality." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "System.Transport" ,
                  "valueMeaning": "The system resource provides transport functionality." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Resource.pds.url" ,
            "title": "url" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The url attribute provides a Uniform Resource Identifier (URI) that specifies where a resource is available and the mechanism for retrieving it." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_AnyURI" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_AnyURI" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.SIP_Deep_Archive.pds.provider_site_id" ,
            "title": "provider_site_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The provider site id attribute provides an identifier for the provider." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "PDS_ATM" ,
                  "valueMeaning": "Planetary Data System: Atmospheres Node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_ENG" ,
                  "valueMeaning": "Planetary Data System: Engineering Node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_GEO" ,
                  "valueMeaning": "Planetary Data System: Geosciences Node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_IMG" ,
                  "valueMeaning": "Planetary Data System: Imaging Node at USGS" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_JPL" ,
                  "valueMeaning": "Planetary Data System: Imaging Subnode at JPL" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_NAI" ,
                  "valueMeaning": "Planetary Data System: NAIF Node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_PPI" ,
                  "valueMeaning": "Planetary Data System: Planetary Plasma Interactions Node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_PSI" ,
                  "valueMeaning": "Planetary Data System: Small Bodies Subnode at Planetary Science Institute" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_RNG" ,
                  "valueMeaning": "Planetary Data System: Rings Node" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS_SBN" ,
                  "valueMeaning": "Planetary Data System: Small Bodies Node at University of Maryland" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.encoding_type" ,
            "title": "encoding_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The encoding_type attribute provides the storage format (binary or character)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Binary" ,
                  "valueMeaning": "The data object contains binary and possibly some character encoded data." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Character" ,
                  "valueMeaning": "The data object contains only character encoded data, for example ASCII or UTF-8 encoded characters." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.kernel_type" ,
            "title": "kernel_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The kernel_type attribute identifies the type of SPICE kernel." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "CK" ,
                  "valueMeaning": "SPICE_Kernel is type CK (orientation kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "DBK" ,
                  "valueMeaning": "SPICE_Kernel is type DBK (database kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "DSK" ,
                  "valueMeaning": "SPICE_Kernel is type DSK (digital shape kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "EK" ,
                  "valueMeaning": "SPICE_Kernel is type EK (events kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "FK" ,
                  "valueMeaning": "SPICE_Kernel is type FK (frames kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IK" ,
                  "valueMeaning": "SPICE_Kernel is type IK (instrument kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "LSK" ,
                  "valueMeaning": "SPICE_Kernel is type LSK (leap seconds kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MK" ,
                  "valueMeaning": "SPICE_Kernel is type MK (meta kernel, which names SPICE kernels to be used together)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PCK" ,
                  "valueMeaning": "SPICE_Kernel is type PCL (planetary constants kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SCLK" ,
                  "valueMeaning": "SPICE_Kernel is type SCLK (spacecraft clock kernel)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SPK" ,
                  "valueMeaning": "SPICE_Kernel is type SPK (ephemeris kernel)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.SPICE_Kernel.pds.parsing_standard_id" ,
            "title": "parsing_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The parsing_standard_id attribute provides the formal name of a standard used for the structure of a Parsable Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "SPICE" ,
                  "valueMeaning": "The SPICE_Kernel conforms to standards used within the NAIF\/SPICE system of data files (kernels) and software;  see  http:\/\/naif.jpl.nasa.gov\/pub\/naif\/toolkit_docs\/Tutorials\/pdf\/individual_docs\/04_spice_overview.pdf" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Science_Facets.pds.domain" ,
            "title": "domain" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The radial \"zone\" or \"shell\" of the target for which the observations were collected or which are represented in the product(s).  The value may depend on wavelength_range and size of the target." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Atmosphere" ,
                  "valueMeaning": "an envelope of uncharged gases and particles surrounding the target and bound to it primarily by gravitational forces" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dynamics" ,
                  "valueMeaning": "The data provide information relating to the orbital motion of one or more bodies (e.g., astrometric observations)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Heliosheath" ,
                  "valueMeaning": "the portion of the solar atmosphere between the termination shock and heliopause, which is dominated by shocked, subsonic solar wind" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Heliosphere" ,
                  "valueMeaning": "the solar atmosphere extending roughly from the outer corona to the edge of the solar plasma at the heliopause, which separates primarily solar plasma from the interstellar medium." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Interior" ,
                  "valueMeaning": "the solid and\/or liquid portion of a target enclosed by its surface." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Interstellar" ,
                  "valueMeaning": "the region between stars, which is outside of any star's heliopause." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ionosphere" ,
                  "valueMeaning": "an envelope of plasma and charged particles surrounding the target and bound to it primarily by gravitational forces." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Magnetosphere" ,
                  "valueMeaning": "an envelope of charged particles, bounded on the upper side by the magnetopause and which is primarily under the control of the target body's magnetic field." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Rings" ,
                  "valueMeaning": "A ring is a narrow band or disc orbiting an astronomical body (planet, dwarf planet, satellite, asteroid, etc.) that is composed of solid material ranging in size from fine dust to a few tens of kilometers." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Surface" ,
                  "valueMeaning": "the boundary between the solid\/liquid portion of a target and its atmosphere, ionosphere, or magnetosphere (or space)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Science_Facets.pds.wavelength_range" ,
            "title": "wavelength_range" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The wavelength range attribute specifies the wavelength range over which the data were collected or which otherwise characterizes the observation(s). Boundaries are vague, and there is overlap." ,
            "isNillable": "true" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Far Infrared" ,
                  "valueMeaning": "The wavelength is between approximately 30 and 300 micrometers" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Gamma Ray" ,
                  "valueMeaning": "The wavelength is less than approximately 0.01 nm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Infrared" ,
                  "valueMeaning": "The wavelength is between approximately 0.75 and 300 micrometers" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Microwave" ,
                  "valueMeaning": "The wavelength is between millimeters and approximately one meter" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Millimeter" ,
                  "valueMeaning": "The wavelength is between approximately one and a few millimeters" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Near Infrared" ,
                  "valueMeaning": "The wavelength is between approximately 0.65 and 5.0 micrometers" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Radio" ,
                  "valueMeaning": "The wavelength is between millimeters and hundreds of thousands of meters" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Submillimeter" ,
                  "valueMeaning": "The wavelength is between approximately 0.3 and 1.0 millimeters" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ultraviolet" ,
                  "valueMeaning": "The wavelength is between approximately 10 and 400 nm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Visible" ,
                  "valueMeaning": "The wavelength is between approximately 390 and 700 nm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "X-ray" ,
                  "valueMeaning": "The wavelength is between approximately 0.01 and 10 nm" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.abstract_desc" ,
            "title": "abstract_desc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The abstract desc attribute provides a summary of a text, scientific article, or document." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.category" ,
            "title": "category" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The category attribute identifies the type of function that the tool or service performs." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Analysis" ,
                  "valueMeaning": "The tool or service provides functionality for analyzing data." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Design" ,
                  "valueMeaning": "The tool or service provides functionality for designing product labels." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dissemination" ,
                  "valueMeaning": "The tool or service provides functionality for downloading products." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Generation" ,
                  "valueMeaning": "The tool or service provides functionality for generating product labels." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planning" ,
                  "valueMeaning": "The tool or service provides functionality for planning data deliveries." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Reader" ,
                  "valueMeaning": "The tool or service provides functionality for reading product labels and\/or data files." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Search" ,
                  "valueMeaning": "The tool or service provides functionality for searching for and retrieving information about data." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Transformation" ,
                  "valueMeaning": "The tool or service provides functionality for transforming product labels and data into alternative formats." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Validation" ,
                  "valueMeaning": "The tool or service provides functionality for validating product labels and data files." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Visualization" ,
                  "valueMeaning": "The tool or service provides functionality for visualizing data." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.interface_type" ,
            "title": "interface_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The interface type attribute identifies the class of interconnection provided." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "API" ,
                  "valueMeaning": "The tool or service provides an Application Programming Interface for interfacing with the software." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Command-Line" ,
                  "valueMeaning": "The tool provides a command-line interface and is most commonly executed in a terminal window." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "GUI" ,
                  "valueMeaning": "The tool or service provides a graphical user interface, either as a desktop application or a web-based interface, for interfacing with the software." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Service" ,
                  "valueMeaning": "The service provides a web-based programming interface (e.g., HTTP, SOAP, etc.)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.release_date" ,
            "title": "release_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The release_date attribute provides the date that the product was released." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.service_type" ,
            "title": "service_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The service type attribute identifies the class of system function provided." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Service" ,
                  "valueMeaning": "The service type Service describes an application that performs a system function on-line." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Tool" ,
                  "valueMeaning": "The service type Tool describes an application that performs a system function off-line." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.software_language" ,
            "title": "software_language" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The software language attribute identifies the language used to write the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.supported_operating_system_note" ,
            "title": "supported_operating_system_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The supported operating system note attribute identifies the Operating System that supports the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.system_requirements_note" ,
            "title": "system_requirements_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The system requirements note attribute identifies what is necessary to process the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.url" ,
            "title": "url" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The url attribute provides a Uniform Resource Identifier (URI) that specifies where a resource is available and the mechanism for retrieving it." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Service_Description.pds.parsing_standard_id" ,
            "title": "parsing_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The parsing_standard_id attribute provides the formal name of a standard used for the structure of a Parsable Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "WADL" ,
                  "valueMeaning": "The service is governed by the standard Web Application Description Language (WADL)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "WSDL 2.n" ,
                  "valueMeaning": "The service is governed by the standard Web Services Description Language (WSDL) Version 2.n." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.author_list" ,
            "title": "author_list" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The author_list attribute contains a semi-colon-separated list of names of people to be cited as authors of the associated product. The general format for individual names is: SURNAME, GIVEN NAME(s). Initials may be used in lieu of given name(s). If the name contains a suffix (\"Jr.\", \"Sr.\", \"III\", etc.) it should be placed before the comma (,). Do not include the word \"and\" before the final author. All authors should be listed explicitly - do not elide the list using \"et al.\"." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.programmers_manual_id" ,
            "title": "programmers_manual_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The programmers manual id attribute provides an identifier to a document giving instruction about the programming of the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.software_id" ,
            "title": "software_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The software id attribute provides a formal name used to refer to the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.software_type" ,
            "title": "software_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The software type attribute identifies the class of which the software is a member." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.software_version_id" ,
            "title": "software_version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The software_version_id attribute provides the version of the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.users_manual_id" ,
            "title": "users_manual_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The users manual id attribute provides a formal name used to refer to a manual that describes how to use the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software.pds.version_id" ,
            "title": "version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The version_id attribute provides the version of the product, expressed in the PDS [m.n] notation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "([0-9]+)(\\.){1}([0-9]+)" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.files" ,
            "title": "files" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The files attribute provides the number of files." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.os_version" ,
            "title": "os_version" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The OS version attribute indicates the version of an operating system." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.program_notes_id" ,
            "title": "program_notes_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The program notes id attribute provides an identifier to a brief statement giving particulars about a software program." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.software_format_type" ,
            "title": "software_format_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The software format type attribute classifies the format of the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.supported_architecture_note" ,
            "title": "supported_architecture_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The supported architecture note attribute identifies  the hardware architecture that can process the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.supported_operating_system_note" ,
            "title": "supported_operating_system_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The supported operating system note attribute identifies the Operating System that supports the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Binary.pds.system_requirements_note" ,
            "title": "system_requirements_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The system requirements note attribute identifies what is necessary to process the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.files" ,
            "title": "files" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The files attribute provides the number of files." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.install_note" ,
            "title": "install_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The install note attribute provides a brief statement giving particulars about the installation of the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.supported_environment_note" ,
            "title": "supported_environment_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The supported environment note attribute identifies  the environment  that can process the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Script.pds.system_requirements_note" ,
            "title": "system_requirements_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The system requirements note attribute identifies what is necessary to process the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.compile_note" ,
            "title": "compile_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The compile note attribute provides a brief statement giving particulars about the compilation of the software source." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.files" ,
            "title": "files" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The files attribute provides the number of files." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.os_version" ,
            "title": "os_version" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The OS version attribute indicates the version of an operating system." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.program_notes_id" ,
            "title": "program_notes_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The program notes id attribute provides an identifier to a brief statement giving particulars about a software program." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.software_dialect" ,
            "title": "software_dialect" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The software dialect attribute indicates the variety of a language used to write the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.software_format_type" ,
            "title": "software_format_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The software format type attribute classifies the format of the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.software_language" ,
            "title": "software_language" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The software language attribute identifies the language used to write the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.supported_architecture_note" ,
            "title": "supported_architecture_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The supported architecture note attribute identifies  the hardware architecture that can process the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.supported_operating_system_note" ,
            "title": "supported_operating_system_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The supported operating system note attribute identifies the Operating System that supports the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Software_Source.pds.system_requirements_note" ,
            "title": "system_requirements_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The system requirements note attribute identifies what is necessary to process the software." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.curating_facility" ,
            "title": "curating_facility" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The curating_facility attribute provides a unique name or identifier for the curating facility maintaining the source product." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.doi" ,
            "title": "doi" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The doi attribute provides the Digital Object Identifier for an object, assigned by the appropriate DOI System Registration Agency." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_DOI" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_DOI" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "10\\.\\S+\/\\S+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.external_source_product_identifier" ,
            "title": "external_source_product_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The external_source_product_identifier provides unique identifiers for one or more source products that are not in the PDS4 Registry. For guidelines on the construction of this identifier, refer to section E.2.6.1.2 of the Data Provider's Handbook." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_External.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "data_to_calibrated_source_product" ,
                  "valueMeaning": "The data product is associated to a calibrated_source_product" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "data_to_derived_source_product" ,
                  "valueMeaning": "The data product is associated to a derived_source_product" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "data_to_partially_processed_source_product" ,
                  "valueMeaning": "The data product is associated to a partially_processed_source_product" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "data_to_raw_source_product" ,
                  "valueMeaning": "The data product is associated to a raw_source_product" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "data_to_telemetry_source_product" ,
                  "valueMeaning": "The data product is associated to a telemetry_source_product" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.comment" ,
            "title": "comment" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The comment attribute is a character string expressing one or more remarks or thoughts relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.lidvid_reference" ,
            "title": "lidvid_reference" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The lidvid_reference attribute provides the logical_identifier plus version_id, which uniquely identifies a product." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Source_Product_Internal.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "data_to_calibrated_source_product" ,
                  "valueMeaning": "The data product is associated to a calibrated_source_product" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "data_to_derived_source_product" ,
                  "valueMeaning": "The data product is associated to a derived_source_product" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "data_to_partially_processed_source_product" ,
                  "valueMeaning": "The data product is associated to a partially_processed_source_product" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "data_to_raw_source_product" ,
                  "valueMeaning": "The data product is associated to a raw_source_product" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "data_to_telemetry_source_product" ,
                  "valueMeaning": "The data product is associated to a telemetry_source_product" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.error_constant" ,
            "title": "error_constant" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The error_constant attribute provides a value that indicates the original value was in error." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.high_instrument_saturation" ,
            "title": "high_instrument_saturation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The high_instrument_saturation attribute specifies a special value whose presence indicates the measuring instrument was saturated at the high end. The value must be less than the value of the valid_minimum attribute or more than the value of the valid_maximum attribute. Values of this attribute should be represented in the same data_type as the elements in the object with which the Special_Constants class is associated." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.high_representation_saturation" ,
            "title": "high_representation_saturation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The high_representative_saturation attribute specifies a special value whose presence indicates the true value cannot be represented in the chosen data type and length -- in this case being above the allowable range -- which may happen during conversion from another data type. The value must be less than the value of the valid_minimum attribute or more than the value of the valid_maximum attribute. Values of this attribute should be represented in the same data_type as the elements in the object with which the Special_Constants class is associated." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.invalid_constant" ,
            "title": "invalid_constant" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The invalid_constant attribute provides a value that indicates the original value was outside the valid range for the parameter." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.low_instrument_saturation" ,
            "title": "low_instrument_saturation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The low_instrument_saturation attribute specifies a special value whose presence indicates the measuring instrument was saturated at the low end. The value must be less than the value of the valid_minimum attribute. Values of this attribute should be represented in the same data_type as the elements in the object with which the Special_Constants class is associated." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.low_representation_saturation" ,
            "title": "low_representation_saturation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The low_representative_saturation attribute specifies a special value whose presence indicates the true value cannot be represented in the chosen data type and length -- in this case being below the allowable range -- which may happen during conversion from another data type. The value must be less than the value of the valid_minimum attribute. Values of this attribute should be represented in the same data_type as the elements in the object with which the Special_Constants class is associated." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.missing_constant" ,
            "title": "missing_constant" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The missing_constant attribute provides a value that indicates the original value was missing, such as due to a gap in coverage." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.not_applicable_constant" ,
            "title": "not_applicable_constant" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The not_applicable_constant attribute provides a value that indicates the parameter is not applicable." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.saturated_constant" ,
            "title": "saturated_constant" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The saturated_constant attribute provides a value that indicates the original value was invalid because of sensor saturation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.unknown_constant" ,
            "title": "unknown_constant" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unknown_constant attribute provides a value that indicates the original value was unknown." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.valid_maximum" ,
            "title": "valid_maximum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The valid_maximum attribute specifies the maximum valid value in the field or digital object with which the Special_Constants class is associated. Values above the valid_maximum have a special meaning. Values of this attribute should be represented in the same data_type as the elements in the object or field described. (Note that PDS3 had no qube-related valid_maximum values because all special constants were set below the valid_minimum.)" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Special_Constants.pds.valid_minimum" ,
            "title": "valid_minimum" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The valid_minimum attribute specifies the minimum valid value in the field or digital object with which the Special_Constants class is associated. Values below the valid_minimum have a special meaning. Values of this attribute should be represented in the same data_type as the elements in the object or field described." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Stream_Text.pds.parsing_standard_id" ,
            "title": "parsing_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The parsing_standard_id attribute provides the formal name of a standard used for the structure of a Parsable Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "7-Bit ASCII Text" ,
                  "valueMeaning": "The Stream Text contains simple text using only the 7-Bit ASCII character set. ANSI X3.4-1986." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS3" ,
                  "valueMeaning": "PDS3 - The text object is governed by the Planetary Data System (PDS) Data Standards Version 3.n." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "UTF-8 Text" ,
                  "valueMeaning": "The Stream Text contains simple text using UTF-8 Unicode character encodings. RFC 3629." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Stream_Text.pds.record_delimiter" ,
            "title": "record_delimiter" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The record_delimiter attribute provides the character or characters used to indicate the end of a record." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Carriage-Return Line-Feed" ,
                  "valueMeaning": "Records in the Stream Text are delimited by ASCII carriage-return line-feed pairs (0x0D_0x0A)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Line-Feed" ,
                  "valueMeaning": "Records in the Stream Text are delimited by ASCII line-feed (0x0A)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "carriage-return line-feed" ,
                  "valueMeaning": "Records in the stream text are delimited by ASCII carriage-return line-feed pairs (0x0D0x0A)" ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Subscriber_PDS3.pds.full_name" ,
            "title": "full_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The full_name attribute provides the complete name for a person and includes titles and suffixes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Subscriber_PDS3.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Subscriber_PDS3.pds.subscription_id" ,
            "title": "subscription_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The subscriber_id provides the identification of a PDS subscription." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Symbolic_Literals_PDS.pds.nil_reason" ,
            "title": "nil_reason" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The nil_reason attribute provides the permissible values allowed as reasons when an attribute assigned a nil value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "anticipated" ,
                  "valueMeaning": "The value is temporarily not available." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "inapplicable" ,
                  "valueMeaning": "There is no value." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "missing" ,
                  "valueMeaning": "The correct value is not readily available to the sender of this data. However, a correct value probably exists." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "unknown" ,
                  "valueMeaning": "The correct value is not readily available to the sender of this data. Furthermore, a correct value may not exist." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.offset" ,
            "title": "offset" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The offset attribute provides the displacement of the object starting position from the beginning of the parent structure (file, record, etc.).  If there is no displacement, offset=0." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "Units_of_Storage" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "unitId": "byte" ,
            "defaultUnitId": "byte"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Base.pds.records" ,
            "title": "records" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The records attribute provides a count of records." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Binary.pds.record_delimiter" ,
            "title": "record_delimiter" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The record_delimiter attribute provides the character or characters used to indicate the end of a record." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Character.pds.record_delimiter" ,
            "title": "record_delimiter" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The record_delimiter attribute provides the character or characters used to indicate the end of a record." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Carriage-Return Line-Feed" ,
                  "valueMeaning": "Records in the delimited table are delimited by ASCII carriage-return line-feed pairs (0x0D_0x0A)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Line-Feed" ,
                  "valueMeaning": "Records in the Table Character are delimited by ASCII line-feed (0x0A)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "carriage-return line-feed" ,
                  "valueMeaning": "Records in the character table are delimited by ASCII carriage-return line-feed pairs (0x0D0x0A)" ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.field_delimiter" ,
            "title": "field_delimiter" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The field_delimiter attribute provides the character that marks the boundary between two fields in a delimited table." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Comma" ,
                  "valueMeaning": "Fields in the delimited table are delimited by a single ASCII comma character (0x2C)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Horizontal Tab" ,
                  "valueMeaning": "Fields in the delimited table are delimited by a single ASCII horizontal tab character (0x09)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Semicolon" ,
                  "valueMeaning": "Fields in the delimited table are delimited by a single ASCII semicolon character (0x3B)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Vertical Bar" ,
                  "valueMeaning": "Fields in the delimited table are delimited by a single ASCII vertical bar character (0x7C)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "comma" ,
                  "valueMeaning": "Fields in the delimited table are delimited by ASCII commas (0x2C)" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "horizontal tab" ,
                  "valueMeaning": "Fields in the delimited table are delimited by horizontal tab characters (0x09)" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "semicolon" ,
                  "valueMeaning": "Fields in the delimited table are delimited by ASCII semicolons (0x3B)" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "vertical bar" ,
                  "valueMeaning": "Fields in the delimited table are delimited by ASCII vertical bar characters ('|' - 0x7C)" ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.parsing_standard_id" ,
            "title": "parsing_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The parsing_standard_id attribute provides the formal name of a standard used for the structure of a Parsable Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "PDS DSV 1" ,
                  "valueMeaning": "The table format conforms to the PDS4 Standards Reference section \"Parsable Bytes Stream\"" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.record_delimiter" ,
            "title": "record_delimiter" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The record_delimiter attribute provides the character or characters used to indicate the end of a record." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Carriage-Return Line-Feed" ,
                  "valueMeaning": "Records in the delimited table are delimited by ASCII carriage-return line-feed pairs (0x0D_0x0A)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Line-Feed" ,
                  "valueMeaning": "Records in the Table Delimited are delimited by ASCII line-feed (0x0A)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "carriage-return line-feed" ,
                  "valueMeaning": "Records in the delimited table are delimited by ASCII carriage-return line-feed pairs (0x0D0x0A)" ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited.pds.records" ,
            "title": "records" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The records attribute provides a count of records." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_External.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Table_Delimited_Source_Product_Internal.pds.reference_type" ,
            "title": "reference_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference_type attribute provides the name of the association." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies a target according to its size and properties." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Asteroid" ,
                  "valueMeaning": "The target is classified as an asteroid" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Astrophysical" ,
                  "valueMeaning": "The target is classified as of interest to the astrophysics community." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Calibration" ,
                  "valueMeaning": "The Target is classified as calibration" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Calibration Field" ,
                  "valueMeaning": "This type indicates a star field observed to be used for calibration purposes. Typically, this will correspond to a field defined in a published work like the Landolt photometric catalog." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Calibrator" ,
                  "valueMeaning": "This type indicates a piece of equipment specifically designed to generate a signal to be used for calibration." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Centaur" ,
                  "valueMeaning": "The target is classified as a Centaur. A Centaur is a minor planet orbiting beyond the orbit of Jupiter and interior to the orbit of Neptune. Its semimajor axis range is greater than 5.4 AU and less than 30.1 AU." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Comet" ,
                  "valueMeaning": "The target is classified as a comet" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dust" ,
                  "valueMeaning": "The target is classified as dust" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dwarf Planet" ,
                  "valueMeaning": "The target is classified as a dwarf planet" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Equipment" ,
                  "valueMeaning": "Target is classified as a part of the host spacecraft or another (human) artifact" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Exoplanet System" ,
                  "valueMeaning": "This type indicates a target that is a star or stellar system (binary, trinary, etc.) with a known or suspected planetary system around it." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Galaxy" ,
                  "valueMeaning": "The target is classified as a galaxy" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Globular Cluster" ,
                  "valueMeaning": "The target is classified as a globular cluster" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Laboratory Analog" ,
                  "valueMeaning": "The target is classified as a laboratory analog approximating a planetary environment." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Lunar Sample" ,
                  "valueMeaning": "The target is a sample collected on the Earth's Moon" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Magnetic Field" ,
                  "valueMeaning": "The target is classified as a magnetic field." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteorite" ,
                  "valueMeaning": "The target is classified as a meteorite" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteoroid" ,
                  "valueMeaning": "The target is classified as a meteoroid" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteoroid Stream" ,
                  "valueMeaning": "The target is classified as a meteoroid stream" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Nebula" ,
                  "valueMeaning": "The target is classified as a nebula" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Open Cluster" ,
                  "valueMeaning": "The target is classified as an open cluster" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planet" ,
                  "valueMeaning": "The target is classified as a planet" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Nebula" ,
                  "valueMeaning": "The target is classified as a planetary nebula" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary System" ,
                  "valueMeaning": "This type indicates a target consisting of a primary body and its satellite(s), ring(s), or similarly associated objects.  For example: Saturn and its rings, Jupiter and its moons, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Plasma Cloud" ,
                  "valueMeaning": "The target is classified as a plasma cloud" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Plasma Stream" ,
                  "valueMeaning": "Target is classified as a plasma stream." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ring" ,
                  "valueMeaning": "The target is classified as a ring" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Sample" ,
                  "valueMeaning": "The target is classified as a physical sample representative of a larger whole. Samples may include but are not confined to rocks, minerals, fluids, or synthetic approximations of those types of materials." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Satellite" ,
                  "valueMeaning": "The target is classified as a satellite" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Sky" ,
                  "valueMeaning": "An observation for which a specific target is either unknown or immaterial." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Star" ,
                  "valueMeaning": "The target is classified as a star" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Star Cluster" ,
                  "valueMeaning": "The target is classified as a star cluster" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Synthetic Sample" ,
                  "valueMeaning": "The target is a sample created in a laboratory." ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Terrestrial Sample" ,
                  "valueMeaning": "The target is classified as a terrestrial sample" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Trans-Neptunian Object" ,
                  "valueMeaning": "The target is classified as a trans-Neptunian object" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.alternate_designation" ,
            "title": "alternate_designation" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The alternate_designation attribute provides aliases." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides additional information or clarification, as needed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a human-readable primary name\/identification in the standard format for the target type." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_Identification.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies a target according to its size and properties so that correct nomenclature can be applied." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Asteroid" ,
                  "valueMeaning": "The target is classified as an asteroid" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Astrophysical" ,
                  "valueMeaning": "The target is classified as of interest to the astrophysics community." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Calibration" ,
                  "valueMeaning": "The Target is classified as calibration" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Calibration Field" ,
                  "valueMeaning": "This type indicates a star field observed to be used for calibration purposes. Typically, this will correspond to a field defined in a published work like the Landolt photometric catalog." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Calibrator" ,
                  "valueMeaning": "This type indicates a piece of equipment specifically designed to generate a signal to be used for calibration." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Centaur" ,
                  "valueMeaning": "The target is classified as a Centaur. A Centaur is a minor planet orbiting beyond the orbit of Jupiter and interior to the orbit of Neptune. Its semimajor axis range is greater than 5.4 AU and less than 30.1 AU." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Comet" ,
                  "valueMeaning": "The target is classified as a comet" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dust" ,
                  "valueMeaning": "The target is classified as dust" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Dwarf Planet" ,
                  "valueMeaning": "The target is classified as a dwarf planet" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Equipment" ,
                  "valueMeaning": "Target is classified as a part of the host spacecraft or another (human) artifact" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Exoplanet System" ,
                  "valueMeaning": "This type indicates a target that is a star or stellar system (binary, trinary, etc.) with a known or suspected planetary system around it." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Galaxy" ,
                  "valueMeaning": "The target is classified as a galaxy" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Globular Cluster" ,
                  "valueMeaning": "The target is classified as a globular cluster" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Laboratory Analog" ,
                  "valueMeaning": "The target is classified as a laboratory analog approximating a planetary environment." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Lunar Sample" ,
                  "valueMeaning": "The target is a sample collected on the Earth's Moon" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Magnetic Field" ,
                  "valueMeaning": "The target is classified as a magnetic field." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteorite" ,
                  "valueMeaning": "The target is classified as a meteorite" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteoroid" ,
                  "valueMeaning": "The target is classified as a meteoroid" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Meteoroid Stream" ,
                  "valueMeaning": "The target is classified as a meteoroid stream" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Nebula" ,
                  "valueMeaning": "The target is classified as a nebula" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Open Cluster" ,
                  "valueMeaning": "The target is classified as an open cluster" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planet" ,
                  "valueMeaning": "The target is classified as a planet" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary Nebula" ,
                  "valueMeaning": "The target is classified as a planetary nebula" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Planetary System" ,
                  "valueMeaning": "This type indicates a target consisting of a primary body and its satellite(s), ring(s), or similarly associated objects.  For example: Saturn and its rings, Jupiter and its moons, etc." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Plasma Cloud" ,
                  "valueMeaning": "The target is classified as a plasma cloud" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Plasma Stream" ,
                  "valueMeaning": "Target is classified as a plasma stream." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Ring" ,
                  "valueMeaning": "The target is classified as a ring" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Sample" ,
                  "valueMeaning": "The target is classified as a physical sample representative of a larger whole. Samples may include but are not confined to rocks, minerals, fluids, or synthetic approximations of those types of materials." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Satellite" ,
                  "valueMeaning": "The target is classified as a satellite" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Sky" ,
                  "valueMeaning": "An observation for which a specific target is either unknown or immaterial." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Star" ,
                  "valueMeaning": "The target is classified as a star" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Star Cluster" ,
                  "valueMeaning": "The target is classified as a star cluster" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Synthetic Sample" ,
                  "valueMeaning": "The target is a sample created in a laboratory" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Terrestrial Sample" ,
                  "valueMeaning": "The target is classified as a terrestrial sample" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "Trans-Neptunian Object" ,
                  "valueMeaning": "The target is classified as a trans-Neptunian object" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_PDS3.pds.orbit_direction" ,
            "title": "orbit_direction" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The orbit_direction element provides the direction of movement along the orbit about the primary as seen from the north pole of the 'invariable plane of the solar system', which is the plane passing through the center of mass of the solar system and perpendicular to the angular momentum vector of the solar system orbit motion. PROGRADE for positive rotation according to the right-hand rule, RETROGRADE for negative rotation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_PDS3.pds.primary_body_name" ,
            "title": "primary_body_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The primary_body_name attribute identifies the primary body with which a given target body is associated as a secondary body." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_PDS3.pds.rotation_direction" ,
            "title": "rotation_direction" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The rotation_direction element provides the direction of rotation as viewed from the north pole of the 'invariable plane of the solar system', which is the plane passing through the center of mass of the solar system and perpendicular to the angular momentum vector of the solar system. The value for this element is PROGRADE for counter -clockwise rotation, RETROGRADE for clockwise rotation and SYNCHRONOUS for satellites which are tidally locked with the primary. Sidereal_rotation_period and rotation_direction_type are unknown for a number of satellites, and are not applicable (N\/A) for satellites which are tumbling." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_PDS3.pds.target_desc" ,
            "title": "target_desc" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The target_desc attribute describes the characteristics of a particular target." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_PDS3.pds.target_name" ,
            "title": "target_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The target_name attribute provides a name by which the target is formally known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Target_PDS3.pds.target_type" ,
            "title": "target_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The target_type attribute identifies the type of a named target." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.altitude" ,
            "title": "altitude" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The altitude attribute provides the height of anything above a given reference plane." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "Units_of_Length" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Length" ,
            "unitId": "AU, Angstrom, cm, km, m, micrometer, mm, nm" ,
            "defaultUnitId": "m"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.aperture" ,
            "title": "aperture" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The aperture attribute provides a measure of the effective collecting area of the telescope -- its diameter (if single and circular) or its equivalent diameter (if non-circular and\/or an array).  For purposes of this definition, aperture efficiency is assumed to be 100 percent." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "Units_of_Length" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Length" ,
            "unitId": "AU, Angstrom, cm, km, m, micrometer, mm, nm" ,
            "defaultUnitId": "m"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.coordinate_source" ,
            "title": "coordinate_source" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The coordinate_source attribute provides the reference figure or datum." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.telescope_altitude" ,
            "title": "telescope_altitude" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The telescope_altitude attribute provides the height of the telescope above a plane tangent to the reference figure (or datum) at the telescope location." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "Units_of_Length" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Length" ,
            "unitId": "AU, Angstrom, cm, km, m, micrometer, mm, nm" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.telescope_latitude" ,
            "title": "telescope_latitude" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The telescope_latitude attribute provides the angular distance of the telescope north (positive) from the equator, measured on the meridian of the telescope." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-90" ,
            "maximumValue": "90" ,
            "pattern": "null" ,
            "unitOfMeasure": "Units_of_Angle" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Angle" ,
            "unitId": "arcmin, arcsec, deg, hr, microrad, mrad, rad" ,
            "defaultUnitId": "deg"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Telescope.pds.telescope_longitude" ,
            "title": "telescope_longitude" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The telescope_longitude attribute provides the angular distance of the telescope east (positive), measured by the angle contained between the meridian of the telescope and the reference figure (or datum) prime meridian." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "360" ,
            "pattern": "null" ,
            "unitOfMeasure": "Units_of_Angle" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Angle" ,
            "unitId": "arcmin, arcsec, deg, hr, microrad, mrad, rad" ,
            "defaultUnitId": "deg"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.definition" ,
            "title": "definition" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The definition attribute provides a statement, picture in words, or account that defines the term." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.instance_id" ,
            "title": "instance_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instance_id attribute provides an identifier for the single occurrence of an object, for example an XPath." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.language" ,
            "title": "language" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The language attribute provides the language used for definition and designation of the term." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "English" ,
                  "valueMeaning": "Values in Terminological_Entry are in English" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Russian" ,
                  "valueMeaning": "Values in Terminological_Entry are in Russian" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.mapping_type" ,
            "title": "mapping_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The mapping type attribute indicates how two terms are related to each other." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "pds4_attribute_replacedby_term" ,
                  "valueMeaning": "A PDS4 attribute is to be replaced by a term." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pds4_attribute_replaces_column" ,
                  "valueMeaning": "A PDS4 attribute replaces a column name." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pds4_attribute_replaces_pds3_attribute" ,
                  "valueMeaning": "A PDS4 attribute replaces a PDS3 attribute." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pds4_attribute_replaces_pds4_attribute" ,
                  "valueMeaning": "A PDS4 attribute replaces a PDS4 attribute." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.preferred_flag" ,
            "title": "preferred_flag" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The preferred_flag indicates whether this entry is  preferred over all other entries." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Boolean" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry.pds.skos_relation_name" ,
            "title": "skos_relation_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The attribute skos_relation_name provides a meaning of the relationship between two associated terms." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "broadMatch" ,
                  "valueMeaning": "BroadMatch is used to state a hierarchical mapping link between two conceptual resources in different concept schemes" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "closeMatch" ,
                  "valueMeaning": "CloseMatch is used to link two concepts that are sufficiently similar that they can be used interchangeably" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "exactMatch" ,
                  "valueMeaning": "ExactMatch is used to link two concepts, indicating a high degree of confidence that the concepts can be used interchangeably" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "narrowMatch" ,
                  "valueMeaning": "NarrowMatch is used to state a hierarchical mapping link between two conceptual resources in different concept schemes" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "relatedMatch" ,
                  "valueMeaning": "RelatedMatch is used to state an associative mapping link between two conceptual resources in different concept schemes" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.identifier" ,
            "title": "identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The identifier attribute provides the formal name used to refer to an object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.instance_id" ,
            "title": "instance_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The instance_id attribute provides an identifier for the single occurrence of an object, for example an XPath." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.model_object_id" ,
            "title": "model_object_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The model_object_id attribute provides the unique identifier of a class, attribute, or value that is defined in the information model." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.model_object_type" ,
            "title": "model_object_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The model_object_type attribute provides a classification for a modeled object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Attribute" ,
                  "valueMeaning": "The term is an alternate name for an attribute in the model." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Class" ,
                  "valueMeaning": "The term is an alternate name for a class in the model." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Keyword" ,
                  "valueMeaning": "The term is an alternate name for something in the model." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Nuance" ,
                  "valueMeaning": "The nuance adds meaning to something in the model." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Value" ,
                  "valueMeaning": "The term is an alternate for a value in the model." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.namespace_id" ,
            "title": "namespace_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The namespace_id attribute provides the abbreviation of the XML schema namespace container for this  logical grouping of classes and attributes.  It is assigned by the steward." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.referenced_identifier" ,
            "title": "referenced_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The referenced identifier attribute provides the identifier of the entify being referenced." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.registration_authority" ,
            "title": "registration_authority" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The registration_authority attribute provides the name of the group  responsible for the terminological entry." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "PDS3" ,
                  "valueMeaning": "The term is governed by the PDS3 registration authority." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PDS4" ,
                  "valueMeaning": "The term is governed by the PDS4 registration authority." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "VICAR" ,
                  "valueMeaning": "The term is governed by the VICAR registration authority." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.skos_relation_name" ,
            "title": "skos_relation_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The attribute skos_relation_name provides a meaning of the relationship between two associated terms." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "broadMatch" ,
                  "valueMeaning": "BroadMatch is used to state a hierarchical mapping link between two conceptual resources in different concept schemes" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "closeMatch" ,
                  "valueMeaning": "CloseMatch is used to link two concepts that are sufficiently similar that they can be used interchangeably" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "exactMatch" ,
                  "valueMeaning": "ExactMatch is used to link two concepts, indicating a high degree of confidence that the concepts can be used interchangeably" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "narrowMatch" ,
                  "valueMeaning": "NarrowMatch is used to state a hierarchical mapping link between two conceptual resources in different concept schemes" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "relatedMatch" ,
                  "valueMeaning": "RelatedMatch is used to state an associative mapping link between two conceptual resources in different concept schemes" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.steward_id" ,
            "title": "steward_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The steward_id attribute provides the abbreviation of the organization that manages the set of registered attributes and classes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Terminological_Entry_SKOS.pds.title" ,
            "title": "title" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The title attribute provides a short, descriptive text string suitable use as a title or brief description in display or listing of products." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.local_mean_solar_time" ,
            "title": "local_mean_solar_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_mean_solar_time attribute provides the hour angle of the fictitious mean Sun at a fixed point on a rotating solar system body." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "8" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.local_true_solar_time" ,
            "title": "local_true_solar_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_true_solar_time (LTST) attribute provides the local time on a rotating solar system body where LTST is 12 h at the sub-solar point (SSP) and increases 1 h for each 15 degree increase in east longitude away from the SSP for prograde rotation." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "8" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.solar_longitude" ,
            "title": "solar_longitude" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The solar_longitude attribute provides the angle between the body-Sun line at the time of interest and the body-Sun line at its vernal equinox." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "360" ,
            "pattern": "null" ,
            "unitOfMeasure": "Units_of_Angle" ,
            "unitOfMeasureId": "0001_NASA_PDS_1.pds.Units_of_Angle" ,
            "unitId": "arcmin, arcsec, deg, hr, microrad, mrad, rad" ,
            "defaultUnitId": "deg"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.start_date_time" ,
            "title": "start_date_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The start_date_time attribute provides the date and time appropriate to the beginning of the product being labeled." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time_YMD_UTC" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Time_Coordinates.pds.stop_date_time" ,
            "title": "stop_date_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The stop_date_time attribute provides the date and time appropriate to the end of the product being labeled." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time_YMD_UTC" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD_UTC" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of UTF8_Short_String_Collapsed may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of UTF8_Short_String_Collapsed must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "UTF8_Short_String_Collapsed has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "255" ,
                  "valueMeaning": "Values of UTF8_Short_String_Preserved may have no more than 255 characters" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of UTF8_Short_String_Preserved must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Short_String_Preserved.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "UTF8_Short_String_Preserved has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_String.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of UTF8_String must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_String.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "UTF8_String must be normalized." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Collapsed.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of UTF8_Text_Collapsed must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Collapsed.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:token" ,
                  "valueMeaning": "UTF8_Text_Collapsed has an XML schema base type of xsd:token" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.character_constraint" ,
            "title": "character_constraint" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The character_constraint attribute limits the characters allowed." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.maximum_characters" ,
            "title": "maximum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_characters attribute provides the upper, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.maximum_value" ,
            "title": "maximum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The maximum_value attribute provides the upper, inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.minimum_characters" ,
            "title": "minimum_characters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_characters attribute provides the lower, inclusive bound on the number of characters." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1" ,
                  "valueMeaning": "Values of UTF8_Text_Preserved must have at least 1 character" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.minimum_value" ,
            "title": "minimum_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The minimum_value attribute provides the lower inclusive bound on the value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved.pds.xml_schema_base_type" ,
            "title": "xml_schema_base_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The xml schema base type attribute provides the data type needed for the XML schema implementation." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "xsd:string" ,
                  "valueMeaning": "UTF8_Text_Preserved has an XML schema base type of xsd:string" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.first_sampling_parameter_value" ,
            "title": "first_sampling_parameter_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The first_sampling_parameter_value element provides the first value in an ascending series and is therefore the minimum value at which a given data item was sampled." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.last_sampling_parameter_value" ,
            "title": "last_sampling_parameter_value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The last_sampling_parameter_value element provides the last value in an ascending series and is therefore the maximum value at which a given data item was sampled." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_base" ,
            "title": "sampling_parameter_base" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sampling_parameter_base attribute provides the base b by which exponentials are calculated in the definition of the attribute sampling_parameter_interval." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_interval" ,
            "title": "sampling_parameter_interval" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sampling_parameter_interval attribute provides the spacing of points at which data are sampled and at which values for an instrument or other parameter are available. If x1 and xn are the first and last sampling parameter values, respectively, xn is larger than x1, n is the number of sampling parameters, the caret symbol (^) denotes exponentiation, and b, a positive real number, is the base for exponentiation, then the value of sampling_parameter_interval is: (xn-x1)\/(n-1) (for sampling_parameter_scale = Linear), (xn\/x1)^(1\/(n-1)) (for sampling_parameter_scale = Logarithmic), (b^xn-b^x1)\/(n-1) (for sampling_parameter_scale = Exponential)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_name" ,
            "title": "sampling_parameter_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sampling_parameter_name element provides the name of the parameter which determines the sampling interval of a particular instrument or dataset parameter. For example, magnetic field intensity is sampled in time increments, and a spectrum is sampled in wavelength or frequency." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_scale" ,
            "title": "sampling_parameter_scale" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sampling_parameter_scale element specifies whether the sampling interval is linear or something other such as logarithmic." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Exponential" ,
                  "valueMeaning": "The values of the independent variable in Exponential Uniformly Sampled data are given at uniform spacing of the exponential of some base b, a positive real number.  That is, for independent variable x in the range [x1, xn], the sampling points xj satisfy: b^xj = b^x1 + (j-1)(b^xn - b^x1)\/(n-1) for j = 1 ... n where the caret symbol (^) denotes exponentiation. For example, if the independent variable has values  0., 0.30103, 0.47712, 0.60206, ... and the base is 10, then the Exponential Uniformly Spaced data are given at 10^0., 10^0.30103, 10^0.47712, 10^0.60206, ... or 1, 2, 3, 4, ..." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Linear" ,
                  "valueMeaning": "Values of Uniformly_Sampled are given at uniform (linear) spacings of an independent variable - for example, 1, 2, 3, 4, ..." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Logarithmic" ,
                  "valueMeaning": "The values of the independent variable, x, in Logarithmic Uniformly Sampled data are given at uniform spacing of the logarithm of x in some base, b, a positive real number.  That is, for independent variable x in the range [x1, xn], the sampling points xj satisfy: log_b(xj) = log_b(x1) + (j-1)(log_b(xn) - log_b(x1))\/(n-1) for j = 1 ... n where log_b(x) is the log of x in base b. For example, if the independent variable has values 1, 10, 100, 1000, ... and the base is 10, then the Logarithmic Uniformly Spaced data are given at 0, 1, 2, 3 ..." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameter_unit" ,
            "title": "sampling_parameter_unit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sampling_parameter_unit element specifies the unit of measure of associated data sampling parameters." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Uniformly_Sampled.pds.sampling_parameters" ,
            "title": "sampling_parameters" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sampling_parameters attribute provides the total number of sampling parameter values between first_sampling_parameter_value and last_sampling_parameter_value (inclusive)." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "2" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Unit_Of_Measure.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "m\/s**2" ,
                  "valueMeaning": "Units_of_Acceleration maximum, minimum, and permissible values are given in units of meter per second per second." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of acceleration according to the quantity (acceleration) being measured." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Acceleration" ,
                  "valueMeaning": "Units_of_Acceleration is classified as being of type Acceleration" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Acceleration.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "cm\/s**2" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Acceleration is cm\/s**2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "km\/s**2" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Acceleration is km\/s**2" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "m\/s**2" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Acceleration is m\/s**2" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "mol" ,
                  "valueMeaning": "Units_of_Amount_Of_Substance maximum, minimum, and permissible values are given in the unit mole" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of amount of substance according to the quantity being measured (amount of substance)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Amount_Of_Substance" ,
                  "valueMeaning": "Units_of_Amount_Of_Substance is classified as being of type Amount_Of_Substance" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Amount_Of_Substance.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "mol" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Amount_Of_Substance is mol" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Angle.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "deg" ,
                  "valueMeaning": "Units_of_Angle maximum, minimum, and permissible values are given in the unit degree" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Angle.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of angle according to the quantity being measured (angle)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Angle" ,
                  "valueMeaning": "Units_of_Angle is classified as being of type Angle" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Angle.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "arcmin" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angle is arcmin" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "arcsec" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angle is arcsec" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "deg" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angle is deg" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "hr" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angle is hr" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "microrad" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angle is microrad" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mrad" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angle is mrad" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "rad" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angle is rad" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Angular_Velocity.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "deg\/s" ,
                  "valueMeaning": "Units_of_Angular_Velocity maximum, minimum, and permissible values are given in the unit degree per second" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Angular_Velocity.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of angular velocity according to the quantity being measured (angular velocity)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Angular_Velocity" ,
                  "valueMeaning": "Units_of_Angular_Velocity is classified as being of type Angular_Velocity" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Angular_Velocity.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "deg\/day" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angular_Velocity is deg\/day" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "deg\/s" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angular_Velocity is deg\/s" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "rad\/s" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Angular_Velocity is rad\/s" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Area.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "m**2" ,
                  "valueMeaning": "Units_of_Area maximum, minimum, and permissible values are given in the unit square meter" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Area.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of area according to the quantity being measured (area)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Area" ,
                  "valueMeaning": "Units_of_Area is classifed as being of type Area" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Area.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "m**2" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Area is m**2" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Current.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "A" ,
                  "valueMeaning": "Units_of_Current maximum, minimum, and permissible values are given in the unit A" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Current.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of current according to the quantity being measured (current)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Current" ,
                  "valueMeaning": "Units_of_Current is classified as being of type Current" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Current.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "A" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Current is A" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mA" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Current is mA" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Energy.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "J" ,
                  "valueMeaning": "Units_of_Energy maximum, minimum, and permissible values are given in the unit joule." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Energy.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Energy" ,
                  "valueMeaning": "Units_of_Energy is classified as being of type Energy" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Energy.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "J" ,
                  "valueMeaning": "The abbreviated unit for joules in Units_of_Energy." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MeV" ,
                  "valueMeaning": "The abbreviated unit for megaelectronvolts in Units_of_Energy." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "eV" ,
                  "valueMeaning": "The abbreviated unit for electronvolts in Units_of_Energy." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "keV" ,
                  "valueMeaning": "The abbreviated unit for kiloelectronvolts Units_of_Energy." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Force.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "N" ,
                  "valueMeaning": "Units_of_Force maximum, minimum, and permissible values are given in the unit newton." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Force.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Force" ,
                  "valueMeaning": "Units_of_Force is classified as being of type Force." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Force.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "N" ,
                  "valueMeaning": "The abbreviated unit for newtons in Units_of_Force." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Frame_Rate.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "frames\/s" ,
                  "valueMeaning": "Units_of_Frame_Rate maximum, minimum, and permissible values are given in the unit frame per second" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Frame_Rate.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of frame rate according to the quantity being measured (frame rate)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Frame_Rate" ,
                  "valueMeaning": "Units_of_Frame_Rate is classified as being of type Frame Rate" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Frame_Rate.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "frames\/s" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Frame_Rate is frames\/s" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Frequency.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Hz" ,
                  "valueMeaning": "Units_of_Frequency maximum, minimum, and permissible values are given in the unit hertz (cycle per second)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Frequency.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of frequency according to the quantity being measured (frequency)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Frequency" ,
                  "valueMeaning": "Units_of_Frequency is classified as being of type Frequency" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Frequency.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "GHz" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Frequency (10^9 Hz)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Hz" ,
                  "valueMeaning": "The abbreviated unit for `Units_of_Frequency (Hertz)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MHz" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Frequency (10^6 Hz)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "THz" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Frequency (10^12 Hz)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "kHz" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Frequency (10^3 Hz)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mHz" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Frequency (1\/10^3 Hz)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "km**3s**-2" ,
                  "valueMeaning": "Units_of_Gmass maximum, minimum, and permissible values are given in the units km**3s**-2." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Gmass" ,
                  "valueMeaning": "Units_of_Gmass gives the value of the product of the universal gravitational constant, G, and the mass of one specified body. The form is (Units_of_Length)**3\/(Units_of_Time)**2" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Gmass.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "km**3s**-2" ,
                  "valueMeaning": "Units_of_Gmass maximum, minimum, and permissible values are given in the units km**3s**-2." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Length.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "m" ,
                  "valueMeaning": "Units_of_Length maximum, minimum, and permnissible values are given in the unit meter" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Length.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies the units of length according to the quantity being measured (length)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Length" ,
                  "valueMeaning": "Units_of_Length is classified as being of type Length" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Length.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string that serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "AU" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Length is AU (astronomical unit)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Angstrom" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Length is Angstrom" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "cm" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Length is cm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "km" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Length is km" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "m" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Length is m" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "micrometer" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Length is micrometer (10-6 m)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mm" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Length is mm (10-3 m)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "nm" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Length is nm (10-9 m)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "pixel\/deg" ,
                  "valueMeaning": "Units_of_Map_Scale maximum, minimum, and permissible values are given in the unit pixel per degree." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Scale" ,
                  "valueMeaning": "Units_of_Map_Scale is classified as being of type Scale" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Map_Scale.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "km\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Map_Scale is km\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "m\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Map_Scale is m\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mm\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Map_Scale is mm\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pixel\/deg" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Map_Scale is pixel\/deg" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "kg" ,
                  "valueMeaning": "Units_of_Mass maximum, minimum, and permissible values are given in the unit kilogram." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of mass according to the quantity being measured (mass)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Mass" ,
                  "valueMeaning": "Units_of_Mass is classified as being of type Mass" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "g" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Mass is g" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "kg" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Mass is kg" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "kg\/m**3" ,
                  "valueMeaning": "Units_of_Mass_Density maximum, minimum, and permissible values are given in the unit kilograms per cubic meter." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Density" ,
                  "valueMeaning": "Units_of_Mass_Density is classified as being of type of Mass Density and also known as Volumetric Mass Density. Density is the relationship between the mass of the substance and the volume it takes up." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Mass_Density.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "g\/cm**3" ,
                  "valueMeaning": "The abbreviated unit for grams per cubic centimeter in Units_of_Mass_Density" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "kg\/m**3" ,
                  "valueMeaning": "The abbreviated unit for kilograms per cubic meter in Units_of_Mass_Density" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Misc.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "DN" ,
                  "valueMeaning": "Units_of_Misc maximum, minimum, and permissible values are given in the unit data number." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Misc.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Miscellaneous" ,
                  "valueMeaning": "Units_of_Misc is classified as being of type Miscellaneous" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Misc.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "DN" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Misc is DN" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/m**2\/sr\/nm\/(DN\/s)" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Misc is W\/m**2\/sr\/nm\/(DN\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "electron\/DN" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Misc is electron\/DN" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "electrons" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Misc is electrons" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "nm\/mm" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Misc nanometer\/millimeter (nm\/mm)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Misc is pixel" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_None.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "none" ,
                  "valueMeaning": "Units_of_None maximum, minimum, and permissible values are dimensionless." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_None.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "None" ,
                  "valueMeaning": "Units_of_None is classified as being of type None" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_None.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string that serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "none" ,
                  "valueMeaning": "Dimensionless quantities have no abbreviated unit" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "airmass" ,
                  "valueMeaning": "Units_of_Optical_Path_Length maximum, minimum, and permissible values are given in the unit airmass" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of optical path length according to the quantity being measured (optical path length)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Optical_Path_Length" ,
                  "valueMeaning": "Units_of_Optical_Path_Length is classified as being of type Optical_Path_Length" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "airmass" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Optical_Path_Length is airmass" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "deg\/pixel" ,
                  "valueMeaning": "Units_of_Pixel_Resolution_Angular maximum, minimum, and permissible values are given in the unit deg\/pixel" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Resolution" ,
                  "valueMeaning": "Units_of_Pixel_Resolution_Angular is classified as being of type Resolution." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "HA\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Angular is HA\/pixel when the angular measurement is given in units of hour angle." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "arcsec\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Angular is arcsec\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "deg\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Angular is deg\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "radian\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Angular is radian\/pixel" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "km\/pixel" ,
                  "valueMeaning": "Units_of_Pixel_Resolution_Linear maximum, minimum, and permissible values are given in the unit km\/pixel" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Resolution" ,
                  "valueMeaning": "Units_of_Pixel_Resolution_Linear is classified as being of type Resolution" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "km\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Linear is km\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "m\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Linear is m\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mm\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Linear is mm\/pixel" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "cart" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "km\/pixel" ,
                  "valueMeaning": "Units_of_Pixel_Resolution_Map maximum, minimum, and permissible values are given in the unit km\/pixel" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "cart" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Resolution" ,
                  "valueMeaning": "Units_of_Pixel_Resolution_Map is classified as being of type Resolution." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "cart" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "deg\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Map is deg\/pixel where 'deg' is interpreted as a surface distance measured in degrees of latitude or longitude" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "km\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Map is km\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "m\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Map is m\/pixel" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mm\/pixel" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Resolution_Map is mm\/pixel" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "pixel\/deg" ,
                  "valueMeaning": "Units_of_Pixel_Scale_Angular maximum, minimum, and permissible values are given in the unit pixel\/deg" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Scale" ,
                  "valueMeaning": "Units_of_Pixel_Scale_Angular is classified as being of type Scale." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "pixel\/arcsec" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Scale_Angular is pixel\/arcsec" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pixel\/deg" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Scale_Angular is pixel\/deg" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pixel\/radian" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Scale_Angular is pixel\/radian" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "pixel\/km" ,
                  "valueMeaning": "Units_of_Pixel_Scale_Linear maximum, minimum, and permissible values are given in the unit pixel\/km" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Scale" ,
                  "valueMeaning": "Units_of_Pixel_Scale_Linear is classified as being of type Scale." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "pixel\/km" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Scale_Linear is pixel\/km" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pixel\/m" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Scale_Linear is pixel\/m" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pixel\/mm" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Scale_Linear is pixel\/mm" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "cart" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "pixel\/deg" ,
                  "valueMeaning": "Units_of_Pixel_Scale_Map maximum, minimum, and permissible values are given in the unit pixel\/deg" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "cart" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Scale" ,
                  "valueMeaning": "Units_of_Pixel_Scale_Map is classified as being of type Scale." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "cart" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "pixel\/deg" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pixel_Scale_Map is pixel\/deg where 'deg' is interpreted as a surface distance measured in degrees of latitude or longitude" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Power.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "W" ,
                  "valueMeaning": "Units_of_Power maximum, minimum, and permissible values are given in the unit watt." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Power.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Power" ,
                  "valueMeaning": "Units_of_Power is classified as being of type Power" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Power.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "EW" ,
                  "valueMeaning": "The abbreviated unit for exawatt (10**18 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "GW" ,
                  "valueMeaning": "The abbreviated unit for gigawatt (10**9 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MW" ,
                  "valueMeaning": "The abbreviated unit for megawatt (10**6 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PW" ,
                  "valueMeaning": "The abbreviated unit for petawatt (10**15 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "TW" ,
                  "valueMeaning": "The abbreviated unit for terawatt (10**12 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "W" ,
                  "valueMeaning": "The abbreviated unit for watt (J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "YW" ,
                  "valueMeaning": "The abbreviated unit for yottawatt (10**24 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ZW" ,
                  "valueMeaning": "The abbreviated unit for zettawatt (10**21 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "aW" ,
                  "valueMeaning": "The abbreviated unit for attowatt (10**-18 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "cW" ,
                  "valueMeaning": "The abbreviated unit for centiwatt (10**-2 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "dBm" ,
                  "valueMeaning": "The abbreviated unit for dB milliwatt (10*log10(mW))" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "dW" ,
                  "valueMeaning": "The abbreviated unit for deciwatt (10**-1 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "daW" ,
                  "valueMeaning": "The abbreviated unit for dekawatt (10**1 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "fW" ,
                  "valueMeaning": "The abbreviated unit for femtowatt (10**-15 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "hW" ,
                  "valueMeaning": "The abbreviated unit for hectowatt (10**2 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "kW" ,
                  "valueMeaning": "The abbreviated unit for kilowatt (10**3 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mW" ,
                  "valueMeaning": "The abbreviated unit for milliwatt (10**-3 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "microW" ,
                  "valueMeaning": "The abbreviated unit for microwatt (10**-6 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "nW" ,
                  "valueMeaning": "The abbreviated unit for nanowatt (10**-9 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "pW" ,
                  "valueMeaning": "The abbreviated unit for picowatt (10**-12 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "yW" ,
                  "valueMeaning": "The abbreviated unit for yoctowatt (10**-24 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "zW" ,
                  "valueMeaning": "The abbreviated unit for zeptowatt (10**-21 J\/s)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "bar" ,
                  "valueMeaning": "Units_of_Pressure maximum, minimum, and permissble values are given in the unit bar (one bar = 100,000 Pa)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of pressure according to the quantity being measured (pressure)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Pressure" ,
                  "valueMeaning": "Units_of_Pressure is classified as being of type Pressure" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pressure.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Pa" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pressure is Pa" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "bar" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pressure is bar (10**5 Pa)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "hPa" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pressure is hPa (100 Pa)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mbar" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Pressure is mbar (100 Pa)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "W\/(m**2*sr)" ,
                  "valueMeaning": "Units_of_Radiance maximum, minimum, and permissible values are given in the unit watt per square meter per steradian" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of radiance according to the quantity being measured (radiance)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Radiance" ,
                  "valueMeaning": "Units_of_Radiance is classified as being of type Radiance" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Radiance.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string that serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "W*m**-2*sr**-1" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Radiance is W*m**-2*sr**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/(m**2*sr)" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Radiance is W\/(m**2*sr)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Rates.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "counts\/bin" ,
                  "valueMeaning": "Units_of_Rates maximum, minimum, and permissible values are given in the unit counts\/bin" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Rates.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute provides a classification for the resource." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Rates" ,
                  "valueMeaning": "Units_of_Rates is classified as being of type Rates" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Rates.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "counts\/bin" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Rates is counts\/bin" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "kilobits\/s" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Rates is kilobits\/s" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "sr" ,
                  "valueMeaning": "Units_of_Solid_Angle maximum, minimum, and permissible values are given in the unit steradian." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of solid angle according to the quantity being measured (sold angle)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Solid_Angle" ,
                  "valueMeaning": "Units_of_Solid_Angle is classified as being of type Solid_Angle" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Solid_Angle.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "sr" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Solid_Angle is sr" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "W\/m**3" ,
                  "valueMeaning": "Units_of_Spectral_Irradiance maximum, minimum, and permissible values are given in the unit watts per square meter (of area) per meter (of wavelength)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of spectral irradiance according to the quantity being measured (spectral irradiance)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Spectral_Irradiance" ,
                  "valueMeaning": "Units_of_Spectral_Irradiance is classified as being of the type Spectral_Irradiance" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "SFU" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Irradiance is SFU" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W*m**-2*Hz**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Irradiance is W*m**-2*Hz**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W*m**-2*nm**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Irradiance is W*m**-2*nm**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W*m**-3" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Irradiance is W*m**-3" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/m**2\/Hz" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Spectral_Irradiance is W\/m**2\/Hz" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/m**2\/nm" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Spectral_Irradiance is W\/m**2\/nm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/m**3" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Spectral_Irradiance is W\/m**3" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "uW*cm**-2*um**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Irradiance is uW*cm**-2*um**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "μW\/cm**2\/μm" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Radiance is μW\/cm**2\/μm" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "W\/m**3\/sr" ,
                  "valueMeaning": "Units_of_Spectral_Radiance maximum, minimum, and permissible values are given in the unit watts per square meter (of area) per steradian per meter (of wavelength)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of spectral radiance according to the quantity being measured (spectral radiance)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Spectral_Radiance" ,
                  "valueMeaning": "Units_of_Spectral_Radiance is classified as being of the type Spectral_Radiance" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "W*m**-2*sr**-1*Hz**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Radiance is W*m**-2*sr**-1*Hz**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W*m**-2*sr**-1*nm**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Radiance is W*m**-2*sr**-1*nm**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W*m**-2*sr**-1*um**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Radiance is W*m**-2*sr**-1*um**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W*m**-3*sr**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Radiance is W*m**-3*sr**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/m**2\/sr\/Hz" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Spectral_Radiance is W\/m**2\/sr\/Hz" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/m**2\/sr\/nm" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Spectral_Radiance is W\/m**2\/sr\/nm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/m**2\/sr\/μm" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Radiance is W\/m**2\/sr\/μm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "W\/m**3\/sr" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Spectral_Radiance is W\/m**3\/sr" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "uW*cm**-2*sr**-1*um**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Radiance is uW*cm**-2*sr**-1*um**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "μW\/cm**2\/sr\/μm" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Spectral_Radiance is μW\/cm**2\/sr\/μm" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Storage.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "byte" ,
                  "valueMeaning": "Units_of_Storage maximum, minimum, and permissible values are given in the unit byte" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Storage.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of storage according to the quantity being measured (storage)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Storage" ,
                  "valueMeaning": "Units_of_Storage is classified as being of type Storage" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Storage.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "byte" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Storage is byte" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "degC" ,
                  "valueMeaning": "Units_of_Temperature maximum, minimum, and permissible values are given in the unit degree Celsius" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of temperature according to the quantity being measured (temperature)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Temperature" ,
                  "valueMeaning": "Units_of_Temperature is classified as being of type Temperature" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Temperature.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "K" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Temperature is K" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "degC" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Temperature is degC" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Time.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "s" ,
                  "valueMeaning": "Units_of_Time maximum, minimum, and permissible values are given in the unit second" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Time.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of time according to the quantity being measured (time)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Time" ,
                  "valueMeaning": "Units_of_Time is classified as being of type Time" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Time.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "day" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is day" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "hr" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is hr" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "julian day" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is julian day" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "microseconds" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is microseconds" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "min" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is min" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ms" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is ms" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ns" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is ns" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "s" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is s" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "yr" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Time is yr" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "m\/s" ,
                  "valueMeaning": "Units_of_Velocity maximum, minimum, and permissible values are given in the unit meter per second" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of velocity according to the quantity being measured (velocity)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Velocity" ,
                  "valueMeaning": "Units_of_Velocity is classified as being of type Velocity" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Velocity.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "cm\/s" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Velocity is cm\/s" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "km\/s" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Velocity is km\/s" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "m\/s" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Velocity is m\/s" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "V" ,
                  "valueMeaning": "Units_of_Voltage maximum, minimum, and permissible values are given in the unit volt" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of voltage according to the quantity being measured (voltage)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Voltage" ,
                  "valueMeaning": "Units_of_Voltage is classified as being of type Voltage" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Voltage.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "V" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Voltage is V" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "mV" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Voltage is mV" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Volume.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "L" ,
                  "valueMeaning": "Units_of_Volume maximum, minimum, and permissible values are given in the unit liter" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Volume.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of volume according to the quantity being measured (volume)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Volume" ,
                  "valueMeaning": "Units_of_Volume is classified as being of the type Volume" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Volume.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string which serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "L" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Volume is L" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "m**3" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Volume is m**3" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.specified_unit_id" ,
            "title": "specified_unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The specified_unit_id attribute provides the unit chosen for maximum_value, minimum_value, and permissible_value." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1\/cm" ,
                  "valueMeaning": "Units_of_Wavenumber maximum, minimum, and permissible values are given in the unit \"per centimeter\"" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies units of wavenumber according to the quantity being measured (wavenumber)." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Wavenumber" ,
                  "valueMeaning": "Units_of_Wavenumber is classified as being of the type Wavenumber" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Wavenumber.pds.unit_id" ,
            "title": "unit_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit_id attribute provides a character or character string that serves as an abbreviation for, or symbol representing, a unit of measure." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "1\/cm" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Wavenumber is 1\/cm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1\/m" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Wavenumber is 1\/m" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "1\/nm" ,
                  "valueMeaning": "The abbreviated unit of Units_of_Wavenumber is 1\/nm" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "cm**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Wavenumber is cm**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "m**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Wavenumber is m**-1" ,
                  "isDeprecated": "true"
                }
             }
            , {"PermissibleValue": {
                  "value": "nm**-1" ,
                  "valueMeaning": "The abbreviated unit for Units_of_Wavenumber is nm**-1" ,
                  "isDeprecated": "true"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Update.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Update.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Update.pds.update_purpose" ,
            "title": "update_purpose" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The update purpose attribute indicates the intended objective of this update." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "true" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Update Label Metadata" ,
                  "valueMeaning": "The purpose of the update is to revise metadata in a product label." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Update Supplemental Metadata" ,
                  "valueMeaning": "The purpose of the update is to revise metadata not in a product label." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Update_Entry.pds.date_time" ,
            "title": "date_time" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The date_time attribute provides the date and time of an event." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_Time_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_Time_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Update_Entry.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Update_Entry.pds.full_name" ,
            "title": "full_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The full_name attribute provides the complete name for a person and includes titles and suffixes." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector.pds.data_type" ,
            "title": "data_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The data_type attribute provides the hardware representation used to store a value in Vector (see PDS Standards Reference section \"Attribute Data Types\")." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ASCII_Real" ,
                  "valueMeaning": "The value is expressed using the data type ASCII_Real" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector.pds.local_identifier" ,
            "title": "local_identifier" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The local_identifier attribute provides a character string which uniquely identifies the containing object within the label." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Local_Identifier" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Local_Identifier" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector.pds.reference_frame_id" ,
            "title": "reference_frame_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference frame id attribute identifies a reference frame, an origin and set of axes, the physical realization of a reference system, i.e., the reference frame orientation and axes are established by the reported coordinates of datum points in the reference system." ,
            "isNillable": "true" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ICRF" ,
                  "valueMeaning": "International celestial reference frame" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MOON_ME_DE421" ,
                  "valueMeaning": "Moon mean Earth based on JPL DE421" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector.pds.type" ,
            "title": "type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The type attribute classifies Vector according to the meaning of its contents." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Acceleration" ,
                  "valueMeaning": "Vector contains the components of an acceleration" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Pointing" ,
                  "valueMeaning": "Vector contains the components of a direction" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Position" ,
                  "valueMeaning": "Vector contains the components of a position" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "Velocity" ,
                  "valueMeaning": "Vector contains the components of a velocity" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector.pds.vector_components" ,
            "title": "vector_components" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The vector_components attribute provides a count of vector components." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-9223372036854775808" ,
            "maximumValue": "9223372036854775807" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.reference_frame_id" ,
            "title": "reference_frame_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The reference frame id attribute identifies a reference frame, an origin and set of axes, the physical realization of a reference system, i.e., the reference frame orientation and axes are established by the reported coordinates of datum points in the reference system." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ICRF" ,
                  "valueMeaning": "International celestial reference frame" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "MOON_ME_DE421" ,
                  "valueMeaning": "Moon mean Earth based on JPL DE421" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.x" ,
            "title": "x" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The x attribute provides the value of the x coordinate in a position vector." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.y" ,
            "title": "y" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The y attribute provides the value of the y coordinate in a position vector." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Cartesian_3.pds.z" ,
            "title": "z" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The z attribute provides the value of the z coordinate in a position vector." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Real" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Real" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "-1.7976931348623157e308" ,
            "maximumValue": "1.7976931348623157e308" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.name" ,
            "title": "name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The name attribute provides a word or combination of words by which the object is known." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.sequence_number" ,
            "title": "sequence_number" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The sequence_number attribute provides a number that is used to order axes in an array." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "1" ,
            "maximumValue": "16" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.unit" ,
            "title": "unit" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The unit attribute provides the unit of measurement." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Vector_Component.pds.value" ,
            "title": "value" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The value attribute provides a single, allowed numerical or character string value." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.archive_status" ,
            "title": "archive_status" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The ARCHIVE_STATUS attribute indicates the stage to which a data set has progressed in the archiving process, from IN QUEUE through ARCHIVED. It can also take on the values SUPERSEDED or SAFED, which indicate that the data set is not part of the active archive. ACCUMULATING can be appended to some values to indicate that the data set is incomplete and\/or that not all components have reached the stage given by the root value; ACCUMULATING would be used, for example, when the archive is being delivered incrementally, as from a mission that lasts many months or years." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "ARCHIVED" ,
                  "valueMeaning": "Archive status of the PDS3 volume is ARCHIVED (passed peer review with all liens resolved. Available through the Data Set Catalog and at NSSDC)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ARCHIVED_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 volume  is ARCHIVED_ACCUMULATING (some parts of the volume are ARCHIVED, but other parts are in earlier stages of the archiving process and\/or have not yet been delivered to PDS; use with caution). " ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_LIEN_RESOLUTION" ,
                  "valueMeaning": "Archive status of the PDS3 volume is IN_LIEN_RESOLUTION (peer review completed; liens are in the process of being resolved; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_LIEN_RESOLUTION_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 volume is IN_LIEN_RESOLUTION_ACCUMULATING (some parts of the volume are IN LIEN RESOLUTION, but other parts are in earlier stages of the archiving process and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_PEER_REVIEW" ,
                  "valueMeaning": "Archive status of the PDS3 volume is IN_PEER_REVIEW (under peer review at the curation node but evaluation is not complete; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_PEER_REVIEW_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 volume is IN_PEER_REVIEW_ACCUMULATING (some parts of the volume are IN PEER REVIEW, but other parts are in earlier stages of the archiving process and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_QUEUE" ,
                  "valueMeaning": "Archive status of the PDS3 volume is IN_QUEUE (received at the curation node but no action has been taken by the curation node; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "IN_QUEUE_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 volume is IN_QUEUE_ACCUMULATING (some parts of the volume are IN QUEUE, but other parts have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "LOCALLY_ARCHIVED" ,
                  "valueMeaning": "Archive status of the PDS3 volume is LOCALLY_ARCHIVED (passed peer review with all liens resolved; considered archived by the curation node but awaiting completion of the standard archiving process; possible TBD items include the arrival of the archive volume at NSSDC and ingestion of catalog information into the Data Set Catalog)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "LOCALLY_ARCHIVED_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 volume is LOCALLY_ARCHIVED_ACCUMULATING (some parts of the volume are LOCALLY ARCHIVED, but other parts are in earlier stages of the archiving process and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PRE_PEER_REVIEW" ,
                  "valueMeaning": "Archive status of the PDS3 volume is PRE_PEER_REVIEW (being prepared for peer review under the direction of the curation node; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "PRE_PEER_REVIEW_ACCUMULATING" ,
                  "valueMeaning": "Archive status of the PDS3 volume is PRE_PEER_REVIEW_ACCUMULATING (some parts of the volume are in PRE PEER REVIEW, but other parts are IN QUEUE and\/or have not yet been delivered to PDS; use with caution)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SAFED" ,
                  "valueMeaning": "Archive status of the PDS3 volume is SAFED (the volume has been received by the PDS with no evaluation; data will not be formally archived)." ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "SUPERSEDED" ,
                  "valueMeaning": "Archive status of the PDS3 volume is SUPERSEDED (this volume has been replaced by a newer version, implying that the volume is not to be used unless the requester has specific reasons; when a volume has been superseded the Engineering Node, will notify NSSDC that their databases need to be updated to advise users of the new status and the location of the replacement volume)." ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.archive_status_note" ,
            "title": "archive_status_note" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The archive status note attribute provides a comment about the archive status." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.curating_node_id" ,
            "title": "curating_node_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The curating_node_id attribute provides the id of the node currently maintaining the data set or volume and is responsible for maintaining catalog information." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.medium_type" ,
            "title": "medium_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The medium_type attribute identifies the physical storage medium for a data volume. Examples: CD-ROM, CARTRIDGE TAPE." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.publication_date" ,
            "title": "publication_date" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The publication_date attribute provides the date on which an item was published." ,
            "isNillable": "true" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Date_YMD" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Date_YMD" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.volume_de_fullname" ,
            "title": "volume_de_fullname" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_de_fullname attribute provide the full name of the data engineer." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.volume_format" ,
            "title": "volume_format" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_format attribute identifies the logical format used in writing a data volume." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.volume_id" ,
            "title": "volume_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_id attribute provides a unique identifier for a data volume. Example: MG_1001." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.volume_name" ,
            "title": "volume_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_name attribute contains the name of a data volume." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.volume_set_id" ,
            "title": "volume_set_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_set_id attribute identifies a data volume or a set of volumes. Volume sets are normally considered as a single orderable entity. Examples: USA_NASA_PDS_MG_1001, USA_NASA_PDS_GR_0001_TO_GR_0009" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.volume_size" ,
            "title": "volume_size" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume size attribute provide the number of bytes in the volume." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_PDS3.pds.volume_version_id" ,
            "title": "volume_version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_version_id attribute identifies the version of a data volume. All original volumes should use a volume_version_id of 'Version 1'." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_Set_PDS3.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_Set_PDS3.pds.volume_series_name" ,
            "title": "volume_series_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_series_name element provides a full, formal name that describes a broad categorization of data products or data sets related to a planetary body or a research campaign (e.g. International Halley Watch). A volume series consists of one or more volume sets that represent data from one or more missions or campaigns." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_Set_PDS3.pds.volume_set_id" ,
            "title": "volume_set_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_set_id attribute identifies a data volume or a set of volumes. Volume sets are normally considered as a single orderable entity. Examples: USA_NASA_PDS_MG_1001, USA_NASA_PDS_GR_0001_TO_GR_0009" ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_Set_PDS3.pds.volume_set_name" ,
            "title": "volume_set_name" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volume_set_name element provides the full, formal name of one or more data volumes containing a single data set or a collection of related data sets. Volume sets are normally considered as a single orderable entity." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Volume_Set_PDS3.pds.volumes" ,
            "title": "volumes" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "ops" ,
            "versionId": "1.20" ,
            "description": "The volumes element provides the number of physical data volumes contained in a volume set." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_NonNegative_Integer" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_NonNegative_Integer" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "0" ,
            "maximumValue": "18446744073709551615" ,
            "pattern": "[0-9]+" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.XML_Schema.pds.ldd_version_id" ,
            "title": "ldd_version_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The ldd_version_id attribute provides the version of the Local Data Dictionary." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.XML_Schema.pds.parsing_standard_id" ,
            "title": "parsing_standard_id" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The parsing_standard_id attribute provides the formal name of a standard used for the structure of a Parsable Byte Stream digital object." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "Schematron ISO\/IEC 19757-3:2006" ,
                  "valueMeaning": "Schematron files are governed by the standard for Schematron (see http:\/\/www.iso.org\/iso\/catalogue_detail.htm?csnumber=40833)" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "XML Schema Version 1.1" ,
                  "valueMeaning": "XML_Schema is governed by the standard for XML Schema 1.1 (see http:\/\/www.w3.org\/XML\/Schema)" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Zip.pds.container_type" ,
            "title": "container_type" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The container type attribute indicates the method used to package the components." ,
            "isNillable": "false" ,
            "isEnumerated": "true" ,
            "isDeprecated": "false" ,
            "dataType": "ASCII_Short_String_Collapsed" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.ASCII_Short_String_Collapsed" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "255" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          , "PermissibleValueList": [
              {"PermissibleValue": {
                  "value": "GZIP" ,
                  "valueMeaning": "Product_Zipped is in container type GZIP, a compressed file format based on the DEFLATE algorithm.  See http:\/\/www.gzip.org\/" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "LZIP" ,
                  "valueMeaning": "Product_Zipped is in container type LZIP, a compressed file format that is created using the Lempel-Ziv-Markov chain algorithm.  See http:\/\/lzip.nongnu.org\/lzip.html" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "TAR" ,
                  "valueMeaning": "Product_Zipped is in container type TAR, a file format that aggregates many small files, their ownership and status information, and their relative organization into a single larger file.  See http:\/\/www.freebsd.org\/cgi\/man.cgi?query=tar&sektion=5&manpath=FreeBSD+8-current" ,
                  "isDeprecated": "false"
                }
             }
            , {"PermissibleValue": {
                  "value": "ZIP" ,
                  "valueMeaning": "Product_Zipped is in container type ZIP, a file format that aggregates one or more smaller files and\/or folders, some of which may have been compressed, into a single file.  See http:\/\/www.pkware.com\/support\/zip-app-note\/" ,
                  "isDeprecated": "false"
                }
             }
           ]
          }
        }
      , {
          "attribute": {
            "identifier": "0001_NASA_PDS_1.pds.Zip.pds.description" ,
            "title": "description" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "nameSpaceId": "pds" ,
            "steward": "pds" ,
            "versionId": "1.20" ,
            "description": "The description attribute provides a statement, picture in words, or account that describes or is otherwise relevant to the object." ,
            "isNillable": "false" ,
            "isEnumerated": "false" ,
            "isDeprecated": "false" ,
            "dataType": "UTF8_Text_Preserved" ,
            "dataTypeId": "0001_NASA_PDS_1.pds.UTF8_Text_Preserved" ,
            "minimumCharacters": "1" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded" ,
            "pattern": "null" ,
            "unitOfMeasure": "null" ,
            "unitOfMeasureId": "null" ,
            "unitId": "null" ,
            "defaultUnitId": "null"
          }
        }
      ]
    , "dataTypeDictionary": [
        {"DataType": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_AnyURI" ,
            "title": "ASCII_AnyURI" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded"
            }
         }
      , {"DataType": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_BibCode" ,
            "title": "ASCII_BibCode" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded"
          , "patternList": [
              {"Pattern": {
                  "value": "[0-9]{4}[A-Za-z0-9&\\.]{5}[A-Za-z0-9\\.]{9}[A-Z\\.]" ,
                  "valueMeaning": "null"
              }
            }
           ]
            }
         }
      , {"DataType": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Boolean" ,
            "title": "ASCII_Boolean" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded"
            }
         }
      , {"DataType": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_DOI" ,
            "title": "ASCII_DOI" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded"
          , "patternList": [
              {"Pattern": {
                  "value": "10\\.\\S+\/\\S+" ,
                  "valueMeaning": "null"
              }
            }
           ]
            }
         }
      , {"DataType": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date" ,
            "title": "ASCII_Date" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded"
          , "patternList": [
              {"Pattern": {
                  "value": "(-)?[0-9]{4}" ,
                  "valueMeaning": "null"
              }
            }
            , {"Pattern": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))" ,
                  "valueMeaning": "null"
              }
            }
            , {"Pattern": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))" ,
                  "valueMeaning": "null"
              }
            }
            , {"Pattern": {
                  "value": "(-)?[0-9]{4}-((0[1-9])|(1[0-2]))-((0[1-9])|([1-2][0-9])|(3[0-1]))" ,
                  "valueMeaning": "null"
              }
            }
           ]
            }
         }
      , {"DataType": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_DOY" ,
            "title": "ASCII_Date_DOY" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded"
          , "patternList": [
              {"Pattern": {
                  "value": "(-)?(00|04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96)00-366(Z?)" ,
                  "valueMeaning": "null"
              }
            }
            , {"Pattern": {
                  "value": "(-)?([0-9]{2}(04|08|12|16|20|24|28|32|36|40|44|48|52|56|60|64|68|72|76|80|84|88|92|96))-366(Z?)" ,
                  "valueMeaning": "null"
              }
            }
            , {"Pattern": {
                  "value": "(-)?[0-9]{4}(Z?)" ,
                  "valueMeaning": "null"
              }
            }
            , {"Pattern": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-5]))))(Z?)" ,
                  "valueMeaning": "null"
              }
            }
           ]
            }
         }
      , {"DataType": {
            "identifier": "0001_NASA_PDS_1.pds.ASCII_Date_Time" ,
            "title": "ASCII_Date_Time" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "minimumCharacters": "Unbounded" ,
            "maximumCharacters": "Unbounded" ,
            "minimumValue": "Unbounded" ,
            "maximumValue": "Unbounded"
          , "patternList": [
              {"Pattern": {
                  "value": "(-)?[0-9]{4}" ,
                  "valueMeaning": "null"
              }
            }
            , {"Pattern": {
                  "value": "(-)?[0-9]{4}-((00[1-9])|(0[1-9][0-9])|([1-2][0-9][0-9])|(3(([0-5][0-9])|(6[0-6]))))" ,
                  "valueMeaning": "null"
              }
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            , {"UnitId": {
                  "value": "electrons" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "nm\/mm" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "pixel" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_None" ,
            "title": "Units_of_None" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "none"
          , "unitIdList": [
              {"UnitId": {
                  "value": "none" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Optical_Path_Length" ,
            "title": "Units_of_Optical_Path_Length" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "airmass"
          , "unitIdList": [
              {"UnitId": {
                  "value": "airmass" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Angular" ,
            "title": "Units_of_Pixel_Resolution_Angular" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "deg\/pixel"
          , "unitIdList": [
              {"UnitId": {
                  "value": "HA\/pixel" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "arcsec\/pixel" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "deg\/pixel" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "radian\/pixel" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Linear" ,
            "title": "Units_of_Pixel_Resolution_Linear" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "km\/pixel"
          , "unitIdList": [
              {"UnitId": {
                  "value": "km\/pixel" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "m\/pixel" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "mm\/pixel" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Resolution_Map" ,
            "title": "Units_of_Pixel_Resolution_Map" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
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          , "unitIdList": [
              {"UnitId": {
                  "value": "deg\/pixel" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "km\/pixel" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "m\/pixel" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "mm\/pixel" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Angular" ,
            "title": "Units_of_Pixel_Scale_Angular" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "pixel\/deg"
          , "unitIdList": [
              {"UnitId": {
                  "value": "pixel\/arcsec" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "pixel\/deg" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "pixel\/radian" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Linear" ,
            "title": "Units_of_Pixel_Scale_Linear" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "pixel\/km"
          , "unitIdList": [
              {"UnitId": {
                  "value": "pixel\/km" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "pixel\/m" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "pixel\/mm" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pixel_Scale_Map" ,
            "title": "Units_of_Pixel_Scale_Map" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "pixel\/deg"
          , "unitIdList": [
              {"UnitId": {
                  "value": "pixel\/deg" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Power" ,
            "title": "Units_of_Power" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "W"
          , "unitIdList": [
              {"UnitId": {
                  "value": "EW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "GW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "MW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "PW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "TW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "YW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "ZW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "aW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "cW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "dBm" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "dW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "daW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "fW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "hW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "kW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "mW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "microW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "nW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "pW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "yW" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "zW" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Pressure" ,
            "title": "Units_of_Pressure" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "bar"
          , "unitIdList": [
              {"UnitId": {
                  "value": "Pa" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "bar" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "hPa" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "mbar" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Radiance" ,
            "title": "Units_of_Radiance" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "W\/(m**2*sr)"
          , "unitIdList": [
              {"UnitId": {
                  "value": "W*m**-2*sr**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W\/(m**2*sr)" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Rates" ,
            "title": "Units_of_Rates" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "counts\/bin"
          , "unitIdList": [
              {"UnitId": {
                  "value": "counts\/bin" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "kilobits\/s" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Solid_Angle" ,
            "title": "Units_of_Solid_Angle" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "sr"
          , "unitIdList": [
              {"UnitId": {
                  "value": "sr" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Irradiance" ,
            "title": "Units_of_Spectral_Irradiance" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "W\/m**3"
          , "unitIdList": [
              {"UnitId": {
                  "value": "SFU" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W*m**-2*Hz**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W*m**-2*nm**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W*m**-3" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W\/m**2\/Hz" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W\/m**2\/nm" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W\/m**3" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "uW*cm**-2*um**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "μW\/cm**2\/μm" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Spectral_Radiance" ,
            "title": "Units_of_Spectral_Radiance" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "W\/m**3\/sr"
          , "unitIdList": [
              {"UnitId": {
                  "value": "W*m**-2*sr**-1*Hz**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W*m**-2*sr**-1*nm**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W*m**-2*sr**-1*um**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W*m**-3*sr**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W\/m**2\/sr\/Hz" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W\/m**2\/sr\/nm" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W\/m**2\/sr\/μm" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "W\/m**3\/sr" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "uW*cm**-2*sr**-1*um**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "μW\/cm**2\/sr\/μm" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Storage" ,
            "title": "Units_of_Storage" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "byte"
          , "unitIdList": [
              {"UnitId": {
                  "value": "byte" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Temperature" ,
            "title": "Units_of_Temperature" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "degC"
          , "unitIdList": [
              {"UnitId": {
                  "value": "K" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "degC" ,
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                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Time" ,
            "title": "Units_of_Time" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
            "defaultUnitId": "s"
          , "unitIdList": [
              {"UnitId": {
                  "value": "day" ,
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                }
             }
            , {"UnitId": {
                  "value": "hr" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "julian day" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "microseconds" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "min" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "ms" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "ns" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "s" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "yr" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Velocity" ,
            "title": "Units_of_Velocity" ,
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            "registrationAuthorityId": "0001_NASA_PDS_1" ,
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          , "unitIdList": [
              {"UnitId": {
                  "value": "cm\/s" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "km\/s" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "m\/s" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Voltage" ,
            "title": "Units_of_Voltage" ,
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          , "unitIdList": [
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                  "value": "V" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "mV" ,
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                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Volume" ,
            "title": "Units_of_Volume" ,
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            "registrationAuthorityId": "0001_NASA_PDS_1" ,
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          , "unitIdList": [
              {"UnitId": {
                  "value": "L" ,
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                }
             }
            , {"UnitId": {
                  "value": "m**3" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      , {"Unit": {
            "identifier": "0001_NASA_PDS_1.pds.Units_of_Wavenumber" ,
            "title": "Units_of_Wavenumber" ,
            "nameSpaceId": "pds" ,
            "registrationAuthorityId": "0001_NASA_PDS_1" ,
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          , "unitIdList": [
              {"UnitId": {
                  "value": "1\/cm" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "1\/m" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "1\/nm" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "cm**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "m**-1" ,
                  "valueMeaning": "null"
                }
             }
            , {"UnitId": {
                  "value": "nm**-1" ,
                  "valueMeaning": "null"
                }
             }
           ]
          }
        }
      ]
    }
  }
]
