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3.4.6 URI to Resource Identifier Translation


   URI-references and resources correspond on a many-to-one basis. A URI-reference designates a single distinct resource, but a given resource may have more than one URI-reference.

   In a DAF implementation one URI-reference for each resource is distinguished. This is the URI returned by ResourceIDService when the ResourceID is translated.

   Conversely, the ResourceIDService must be able to translate the distinguished URI-reference of a resource to its ResourceID. It is implementation dependent whether the ResourceIDService can translate any other URIs for the same resource to its ResourceID.