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Composite key
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== External links == *[http://esw.w3.org/topic/CIFP Composite Inverse Functional Properties]: for an equivalent notion in the Semantic Web *[http://rdbms.opengrass.net Relation Database terms of reference, Keys]: An overview of the different types of keys in an RDBMS *[https://www.databasestar.com/database-keys/ Different types of keys in a database]: An overview of all the types of keys that are used in an RDBMS [[Category:Data modeling]] [[ru:Составной ключ]]
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