Back المحرك في قواعد البيانات Arabic Verilənlər bazası triggeri Azerbaijani Trigger Catalan Trigger (databáze) Czech Datenbanktrigger German Trigger (base de datos) Spanish محرک پایگاه داده Persian Heräte Finnish Déclencheur French Trigger (adatbázisok) Hungarian
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 can also be used to log historical data, for example to keep track of employees' previous salaries.