The relational model for
database management is a
database model based on
predicate logic and
set theory. It was first formulated and proposed in
1969 by
Edgar Codd with aims that included avoiding, without loss of completeness, the need to write computer programs to express database queries and enforce database integrity constraints. "
Relation" is a mathematical term for "table", and thus "relational" roughly means "based on tables". It does not refer to the links or "keys" between tables, contrary to popular belief.
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