Data Control
The Data Control Language (DCL) authorizes users to access and manipulate data. Its two main statements are:
GRANTauthorizes one or more users to perform an operation or a set of operations on an object.REVOKEeliminates a grant, which may be the default grant.
Example:
GRANT SELECT, UPDATE ON My_table TO some_user, another_user; REVOKE SELECT, UPDATE ON My_table FROM some_user, another_user;Read more about this topic: SQL
Famous quotes containing the words data and/or control:
“This city is neither a jungle nor the moon.... In long shot: a cosmic smudge, a conglomerate of bleeding energies. Close up, it is a fairly legible printed circuit, a transistorized labyrinth of beastly tracks, a data bank for asthmatic voice-prints.”
—Susan Sontag (b. 1933)
“The inability to control our childrens behavior feels the same as not being able to control it in ourselves. And the fact is that primitive behavior in children does unleash primitive behavior in mothers. Thats what frightens mothers most. For young children, even when out of control, do not have the power to destroy their mothers, but mothers who are out of control feel that they may destroy their children.”
—Elaine Heffner (20th century)