The (GP) Relationship Class Key Object.
|IClone (esriSystem)||Provides access to members that control cloning of objects.|
|IGPRelationshipClassKey||Provides access to methods that describe a key of a relationship class data element.|
|IPersist||Defines the single method GetClassID, which is designed to supply the CLSID of an object that can be stored persistently in the system. IPersist is the base interface for three other interfaces: IPersistStorage, IPersistStream, and IPersistFile.|
|IXMLSerialize (esriSystem)||Provides access to members that XML serialize and deserialize an object to/from XML.|