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Referencing Composites using ID and IDREF
Communication of Identifiers in DDEX Messages
Can a Release be Identified by an ISRC?
Identifiers for Resources, Releases and Parties
Should I use an ISRC as the primary key for my database?
Avoiding the use of proprietary Identifiers
Limitations of Proprietary Identifiers
Opus and Composer Catalogue Numbers
Territory Codes (ISO 3166-1, ISO 3166-3, TIS)
Proprietary Identifiers
Malformed Identifiers
Multiple Proprietary Identification Systems
Excluded Territories and Worldwide
Bar codes of various lengths
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