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The Relational Data Model

19 十月, 2015 - 15:21

This data model is introduced by C.F.Codd in 1970. Currently, it is considered as the most widely used data model.

The relational model has provided the basis for:

  • Research on theory of data/relationship/constraint
  • Numerous database design methodologies
  • The standard database access language SQL
  • Almost all modern commercial database management systems

The relational data model describes the world as “a collection of inter-related relations (or tables) “