Se> 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. [SybaSe SQL Server ReleaSe 10.0 TranSact-SQL USer' S Guide]. (1995-02-22)