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Jan Hidders (talk | contribs) m spelling |
Jan Hidders (talk | contribs) m RM is the only "full" data model |
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[[n-ary relation]]s. It furthermore defines a set of specific constraints (candidate keys, foreign keys, functional dependencies, multi-valued dependencies, join dependencies) and a general language for specifying constraints ([[first-order logic]]), and for manipulations and querying the data the [[relational algebra]], [[tuple calculus]] and [[___domain calculus]] are introduced.
Other examples are the [[Entity-Relationship Model]] and [[ORM]] although these usually only describe a small subset of the aspects described above.
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