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Computing (FOLDOC) dictionary (also found in English - Vietnamese, English - English (Wordnet), )
trigger
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database An action causing the automatic invocation of a
procedure, for instance to preserve referential integrity.
A triggers goes into effect when a user attempts to modify
data with an insert, delete, or update command. A trigger can
instruct the system to take any number of actions when a
specified change is attempted. By preventing incorrect,
unauthorized, or inconsistent changes to data, triggers help
maintain the integrity of the database.