Relational calculus




<database> 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].



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reify
reincarnation, cycle of
reinvent the wheel
relation
relational algebra
 Codd's reduction algorithm
domain calculus
relational algebra
relational calculus
tuple calculus
 relational database
relational database management system
relational data model
relational DBMS
relational language