[OASIS Issue Tracker] Created: (ODATA-177) Allow entities to be members of multiple entity sets

Allow entities to be members of multiple entity sets
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                 Key: ODATA-177
                 URL: http://tools.oasis-open.org/issues/browse/ODATA-177
             Project: OASIS Open Data Protocol (OData) TC
          Issue Type: Improvement
          Components: OData Protocol v1.0
    Affects Versions: WD01
         Environment: [Proposed]
            Reporter: Ralf Handl
             Fix For: WD01


Section 3 currently states that an entity can be a member of at most one entity set. Given the ability to model entity type hierarchies this restriction seems rather unnatural: "Manager" is a specialization of "Employee", so it seems natural to have two entity sets "Managers" and "Employees", the former being a true subset of the latter, and a new "Manager" entity, POSTed to either set, would automatically appear in both.

Currently the only way to do that is to have an "Employees" entity set and a "Managers" function, with the drawback that the function is not advertised in the service document and thus not consumable in a hypermedia fashion.

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