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database trigger : ウィキペディア英語版 | database trigger A database trigger is procedural code that is automatically executed in response to certain events on a particular table or view in a database. The trigger is mostly used for maintaining the integrity of the information on the database. For example, when a new record (representing a new worker) is added to the employees table, new records should also be created in the tables of the taxes, vacations and salaries. ==Triggers in DBMS == Below follows a series of descriptions of how some popular DBMS support triggers.
抄文引用元・出典: フリー百科事典『 ウィキペディア(Wikipedia)』 ■ウィキペディアで「database trigger」の詳細全文を読む
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