| Description: The reference_type attribute provides the name of the association. |
| Namespace Id: pds | Steward: ops | Class Name: DD_Association_External *Deprecated* | Type: ASCII_Short_String_Collapsed |
| Minimum Value: None | Maximum Value: None | Minimum Characters: 1 | Maximum Characters: 255 |
| Unit of Measure Type: None | Default Unit Id: None | Attribute Concept: Type | Conceptual Domain: Short_String |
| Status: Active | Nillable: false | Pattern: None |
| Permissible Value(s) | Value | Value Meaning |
| | attribute_of | The referenced attribute is a member of this class |
| | component_of | The referenced class is a component of this class |
| | extension_of | The referenced class is an extension of this class |
| | parent_of | This class is a parent of the referenced class |
| | restriction_of | The referenced class is a restriction of this class |
| | subclass_of | The referenced class is a subclass of this class |