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1 definition found
From The Free On-line Dictionary of Computing (05 January 2017) [foldoc]:
relational calculus
An operational methodolgy, founded on {predicate
calculus}, dealing with descripitive expressions that are
equivalent to the operations of relational algebra. {Codd's
reduction algorithm} can convert from relational calculus to
relational algebra.
Two forms of the relational calculus exist: the {tuple
calculus} and the domain calculus.
["An Introduction To Database Systems" (6th ed), C. J. Date,
Addison Wesley].
(1998-10-05)