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WGBH / PBCore2.0

Public Broadcasting Metadata Dictionary Project
http://www.pbcore.org
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R24: Relation Element #27

Closed pdpinch closed 14 years ago

pdpinch commented 14 years ago

The relationIdentifier is the only PBCore identifier that does not express the associated source of the identifier. Within systems that provide globally unique identifiers, this is fine; however systems that assign identifiers that are only unique within the system can not properly resolve. Additionally even if the relationIdentifier value is globally unique, it may not provide enough information to determine under what authority or system that identifier can be resolved against. -- Additionally relationTypes only express parent-child relationships and not sibling relationships (such as sequential ordering and positioning, see also R18)

pdpinch commented 14 years ago

In 5d0e20eabf4a35d9968d4d525d95f85f26990c45 relationIdentifier is a string type, which as defined in PBCore includes a source attribute.