[OASIS Issue Tracker] Created: (ODATA-535) Define specialization for terms

Define specialization for terms
-------------------------------

                 Key: ODATA-535
                 URL: http://tools.oasis-open.org/issues/browse/ODATA-535
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Improvement
          Components: OData CSDL
    Affects Versions: V4.0_CS01
         Environment: [Proposed]
            Reporter: Ralf Handl
             Fix For: V4.0_CSD03


When merging type terms and value terms we lost the possibility to define terms that are a specialization of other terms, e.g. "developers are also people".

What we can currently do:
- define a term Person using complex PersonType
- define a complex DeveloperType that inherits from PersonType
- annotate something with term Person and use a record of type DeveloperType

So someone knowing the term Person will find this term with additional properties defined on the DeveloperType. 
(If we don't accept ODATA-513 that someone may only find the additional properties and none of the PersonType properties.)





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