ISO/ITU General Relationship Model

The General Relaitonship Model [X.725 |  IS 10165-7] provides very good definitions and guidelines for describing relationships independently of their implementation.  The definitions are reasonably precise  Generic relationship examples show how these definitions can be used.   The standard is described in this document from the archives of X3H7.

Copies of the GRM standard are available through national standards bodies.   See also these links: 

       International Organization for Standardization

       International Telecommunications Union  


For some more good definitions and guidelines, on objects generally, see the ODP Reference Model [X.900]

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