The Ingest_LDD class provides a form for collecting class and attribute definitions. The Product AIP class defines a product for the Archival Information Package. The Product Attribute Definition provides an attribute definition in XML encoding. The Product Browse class defines a product consisting of one encoded byte stream digital object. A Product_Bundle is an aggregate product and has a table of references to one or more collections. The Product Class Definition provides a class definition in XML encoding. A Product_Collection has a table of references to one or more basic products. The references are stored in a table called the inventory. The Product Context class describes something that provides context and provenance for an observational product. The Product DIP class defines a product for the Dissemination Information Package. The Product DIP_Deep_Archive class defines a product for the Dissemination Information Package for the deep archive. The Data Set PDS3 product is used to create proxy labels for the data sets in the PDS3 Data Set catalog. A Product Document is a product consisting of a single logical document that may be comprised of one or more document formats. The Product File Repository class consists of a single text file. This product is used to register a file in a repository. The Product File Text consists of a single text file with ASCII character encoding. An Instrument Host product describes an instrument host. This product captures the PDS3 catalog instrument host information. An Instrument product describes an instrument. This product captures the PDS3 catalog instrument information. An Mission product describes a mission. This product captures the PDS3 catalog mission information. A Product_Observational is a set of one or more information objects produced by an observing system. The Product Proxy PDS3 class defines a product with enough information to register a PDS3 data product. The Product SIP class defines a product for the Submission Information Package. The Product SPICE Kernel class defines a SPICE kernel product. The Product Service class defines a product for registering services. Service descriptions from this product are used to register services as intrinsic registry objects. Product Software is a product consisting of a set of one or more software formats. The Product_Subscription_PDS3 class provides the list of subscriptions for a PDS3 subscriber. A target product describes a target. This product captures a reduced set of the PDS3 catalog target information. The Product Thumbnail class defines a product consisting of one encoded byte stream digital object. The Product Update class defines a product consisting of update information and optional references to other products. A Product Volume PDS3 product captures the PDS3 volume information. A Product Volume Set PDS3 product captures the PDS3 volume set information. The Product_XML_Schema describes a resource used for the PDS4 implementation into XML. 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. 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. 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). The Dissemination Information Package (DIP) class defines an Information Package, derived from one or more AIPs, that is received by a consumer. The Encoded Header class describes a header that has been encoded using an encoding scheme that is compliant to an external standard. The Header class describes a data object header. 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. The identification area consists of attributes that identify and name an object. 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. The Citation_Information class provides specific fields often used in citing the product in journal articles, abstract services, and other reference contexts. The Modification_History class tracks the history of changes made to the product once it enters the registry system. 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. The Context Area provides context information for a product. The observation area consists of attributes that provide information about the circumstances under which the data were collected. The Time_Coordinates class provides a list of time coordinates. The Primary_Result_Summary class provides a high-level description of the types of products included in the collection or bundle The Investigation_Area class provides information about an investigation (mission, observing campaign or other coordinated, large-scale data collection effort). The Observing System class describes the entire suite used to collect the data. The Observing System Component class references one or more subsystems used to collect data. A subsystem can be an instrument_host, instrument, or any other similar product. Each subsystem is categorized as either a sensor or a source. If the observing system includes both a sensor and a source, Observing System Component occurs twice (once for each type) otherwise it only occurs once. The Target_Identification class provides detailed target identification information. The Geometry class groups geometry information. The mission area allows the insertion of mission specific metadata. The Discipline area allows the insertion of discipline specific metadata. The Uniformly_Sampled class provides parameters for a uniformly sampled table. The Element Array class is used as a component of the array class and defines an element of the array. The Record_Binary class is a component of the table class and defines a record of the table. The Record_Character class is a component of the table class and defines a record of the table. The Axis Array class is used as a component of the array class and defines an axis of the array. The Field_Binary class defines a field of a binary record or a field of a binary group. The Field_Character class defines a field of a character record or a field of a character group. The Group_Field_Binary class allows a group of table fields. The Group_Field_Character class allows a group of table fields. The Reference_List class provides lists general references and cross-references for the product. References cited elsewhere in the label need not be repeated here. The Special Constants class provides a set of values used to indicate special cases that occur in the data. The Internal_Reference class is used to cross-reference other products in the PDS registry system. The Object Statistics class provides a set of values that provide metrics about the object. The External_Reference class is used to reference a source outside the PDS registry system. The Bundle class describes a collection of collections. The Collection class provides a description of a set of products. The Zip class describes a zip file. The Document Format provides a description of a variant of a logical document that is stored in a specific format. For example the PDS Standards Reference has HTML and PDF formatted versions. The File_Area class defines a File and its component data objects. The File Area Browse class describes a file and one or more tagged_data_objects contained within the file. The File Area Encoded Image class describes a file that contains an Encoded Image object. The File Area Inventory class describes a file and an inventory consisting of references to members. The File Area Observational class describes, for an observational product, a file and one or more tagged_data_objects contained within the file. The File Area SPICE Kernel class describes a file that contains a SPICE Kernel object. The File Area Text class describes a file that contains a text stream object. The File Area XML Schema class describes a file that contains a resource used for the PDS4 implementation into XML. The Instrument class provides a description of a physical object that collects data. The Document class describes a document. The File Area Observational Supplemental class describes, for an observational product, additional files and one or more tagged_data_objects contained within the file. The Instrument Host class provides a description of the physical object upon which an instrument is mounted. The Document Format Set class is a set consisting of a document format and associated files. The File class consists of attributes that describe a file in a data store. The Investigation class provides a description of activities involved in the collection of data. The Document File class describes a file which is a part of a document. The Target class provides a description of a physical object that is the object of data collection. The Agency class provides a description of an entity that provides regional or national level governance over nodes within the federated Planetary Data System. The Alias class provides a single alternate name and identification for this product in this or some other archive or data system. 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. The Array 2D class is the parent class for all two dimensional array based classes. The Array 2D Image class is an extension of the Array 2D class and defines a two dimensional image. The Array 2D Map class is an extension of the Array 2D class and defines a two dimensional map. The Array 2D Spectrum class is an extension of the Array 2D class and defines a two dimensional spectrum. The Array 3D class is the parent class for all three dimensional array based classes. The Array 3D Image class is an extension of the Array 3D class and defines a three dimensional image. The Array 3D Movie class is an extension of the Array 3D class and defines a movie as a set of two dimensional images in a time series. The Array 3D Spectrum class is an extension of the Array 3D class and defines a three dimensional spectrum. The Band_Bin class specifies the characteristics of an individual spectral band in a spectral qube. The Band_Bin_Set class contains the spectral characteristics for all the spectral bands in a qube. The Bundle Member Entry class provides a member reference to a collection. The Byte Stream class defines a stream of bytes. The Checksum_Manifest class defines a two column table for file references and checksums. The table structure is compatible with the output from an MD5 checksum utility. The DD_Association class defines the association between two classes or a class and an attribute in a data dictionary. 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. The DD_Attribute class defines an attribute for a data dictionary. The DD_Attribute_Full class provides a more complete definition of an attribute in the data dictionary. The DD_Class class defines a class for a data dictionary. The DD_Class_Full class provides a more complete definition of a class for a data dictionary. The DD_Permissible_Value class lists permissible values and their meanings. The DD_Permissible_Value_Full class lists permissible values, their meanings, and the dates when active. The DD_Value_Domain class defines an attribute's permissible values and their constraints. The DD_Value_Domain_Full class provides a more complete definition of a attribute's value domain. The Data Set PDS3 class is used to capture the data set information from the PDS3 Data Set Catalog. The Display_2D_Image class provides attributes to enable the display of a 2 dimensional image. 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. 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. The Encoded Image class is used for ancillary images in standard formats, such as JPEG. 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. The Facility class provides a name and address for a terrestrial observatory or laboratory. 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. 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. The Field_Delimited class defines a field of a delimited record or a field of a delimited group. The Field Statistics class provides a set of metrics for a column formed by a field in a repeating record. The File Area Binary class describes a file that contains an encoded byte stream. The File Area Checksum Manifest class describes a file that contains a two column table for file references and checksums. The File Area Service Description class describes a file that contains a service 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. The Group class defines a group of (repeating) fields and, possibly, (sub) groups; it is the parent class of all specific group classes. The Field_Group_Delimited class allows a group of delimited fields. 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. The Information_Package_Component class associates a Bundle, Collections or Basic Products with Checksum and Storage Manifests. The Instrument Host class provides a description of the phyiscal object upon which an instrument is mounted. This class captures the PDS3 catalog Instrument Host information. The Instrument class provides a description of a phyiscal object that collects data. This class captures the PDS3 catalog Instrument information. The Inventory class defines the inventory for members of a collection. The Mission PDS3 class describes an activity involved in the collection of data. This class captures the PDS3 catalog Mission information. The NSSDC Information class provides identification information for data submitted to the NSSDC. The Node class provides a description of an entity that provides local governance within the federated Planetary Data System. The Other class provides a description of activities involved in the collection of data which are not otherwise modeled. 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. 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. The Packed_Data_Fields class contains field definitions for extracting packed data from the associated byte string field. 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. A Product is a uniquely identified object that is managed by a registry/repository. It consists of one or more tagged data objects. 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. The Quaternion_Component class provides a component of a quaternion. The Record class defines a record of a file and is the parent class of all specific record classes. The Record_Delimited class is a component of the delimited table (spreadsheet) class and defines a record of the delimited table. The Resource class provides a description of a web resource. The SPICE Kernel class describes a SPICE object. The Service Description class defines a file that contains a standardized service specification. The Software class describes a software product The Software Script class provides a description of a software code that is stored as a compiled binary file. The Software Script class provides a description of a software code that is stored as a script. The Software Script class provides a description of a software code that is stored as source code. The Stream text class defines a text object. The Subscriber PDS3 class provides the name of the subscriber and their subscription list. 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. The Table Binary class is an extension of table base and defines a simple binary table. The Table Character class is an extension of table base and defines a simple character table. The Table_Delimited class defines a simple table (spreadsheet) with delimited fields and records. The Target class provides a description of a phyiscal object that is the object of data collection. This class captures the PDS3 catalog Target information. The Telescope class provides coordinates and parameters for terrestrial, ground-based telescopes. The terminological_entry class provides the name (designation) and definition of the attribute in a specified natural language. The Transfer_Manifest class defines a table that maps product LIDVIDs to the file_specificaition_names of the products' XML label files. The Update class consists of update information. The Update Entry class provides the date and description of an update. The Vector class provides the components of either a velocity or position vector. The Vector_Cartesian_3_Base class is the parent class of 3 element Cartesian vectors. The Vector_Cartesian_3_Acceleration class is a 3 element Cartesian vector for acceleration coordinates. The Vector_Cartesian_3_Pointing class is a 3 element normalized Cartesian vector for pointing. The Vector_Cartesian_3_Position class is a 3 element Cartesian vector for position coordinates. The Vector_Cartesian_3_Velocity class is a 3 element Cartesian vector for velocity coordinates. The Vector_Component class provides a component of a vector. The Volume_PDS3 class is used to capture the volume information from the PDS3 Data Set Catalog. The Volume_Set_PDS3 class is used to capture the volume set information from the PDS3 Data Set Catalog. The XML Schema class defines a resource used for the PDS4 implementation into XML. This section contains the simpleTypes that provide more constraints than those at the base data type level. The simpleTypes defined here build on the base data types. This is another component of the common dictionary and therefore falls within the pds namespace. This section contains the base data types for PDS4 and any constraints those types may have. These types should be reused across schemas to promote compatibility. This is one component of the common dictionary and thus falls into the common namespace, pds. This element is the PDS4 Ingest_LDD XML Schema. This element is the PDS4 Product_AIP XML Schema. This element is the PDS4 Product_Attribute_Definition XML Schema. This element is the PDS4 Product_Browse XML Schema. This element is the PDS4 Product_Bundle XML Schema. This element is the PDS4 Product_Class_Definition XML Schema. This element is the PDS4 Product_Collection XML Schema. This element is the PDS4 Product_Context XML Schema. This element is the PDS4 Product_DIP XML Schema. This element is the PDS4 Product_DIP_Deep_Archive XML Schema. This element is the PDS4 Product_Data_Set_PDS3 XML Schema. This element is the PDS4 Product_Document XML Schema. This element is the PDS4 Product_File_Repository XML Schema. This element is the PDS4 Product_File_Text XML Schema. This element is the PDS4 Product_Instrument_Host_PDS3 XML Schema. This element is the PDS4 Product_Instrument_PDS3 XML Schema. This element is the PDS4 Product_Mission_PDS3 XML Schema. This element is the PDS4 Product_Observational XML Schema. This element is the PDS4 Product_Proxy_PDS3 XML Schema. This element is the PDS4 Product_SIP XML Schema. This element is the PDS4 Product_SPICE_Kernel XML Schema. This element is the PDS4 Product_Service XML Schema. This element is the PDS4 Product_Software XML Schema. This element is the PDS4 Product_Subscription_PDS3 XML Schema. This element is the PDS4 Product_Target_PDS3 XML Schema. This element is the PDS4 Product_Thumbnail XML Schema. This element is the PDS4 Product_Update XML Schema. This element is the PDS4 Product_Volume_PDS3 XML Schema. This element is the PDS4 Product_Volume_Set_PDS3 XML Schema. This element is the PDS4 Product_XML_Schema XML Schema. This element is the PDS4 Product_Zipped XML Schema.