< database > A form of relational calculus in which a variable's only permitted values are tuples of a given relation .
Codd 's unimplemented language ALPHA and the subsequent QUEL are examples of the tuple calculus.
(1998-10-05)
< database > A form of relational calculus in which a variable's only permitted values are tuples of a given relation .
Codd 's unimplemented language ALPHA and the subsequent QUEL are examples of the tuple calculus.
(1998-10-05)
FOLDOC computer English dictionary. Английский словарь по компьютерам FOLDOC. 2012