what are triggers in sql

Answer 1

triggers are those programme which are executed when either deletion or creation or modification is done on data

Answer 2

they are like watchman looking upon tables of database. If any modification done in it makes a indirect action accordingly

Answer 3

creation,insert,

Answer 4

A trigger is a special kind of stored procedure that automatically executes when an event occurs in the database server. DML triggers execute when a user tries to modify data through a data manipulation language (DML) event. DML events are INSERT, UPDATE or DELETE statements on a table or view.