trigger

Từ điển Máy Tính - Foldoc Dictionary

trigger

(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.

[Sybase SQL Server Release 10.0 Transact-SQL User's Guide].

Last updated: 1995-02-22

• Từ đồng nghĩa / Synonyms:
  induction, initiation, gun trigger, trip, actuate, activate, set off, spark off, spark, trigger off, touch off