Answer
A trigger is defined for and connected to a RDBMS table. A trigger can be defined to do a particular job (typically insert audit records in another table or perform some validations) whenever the original table (on which the trigger is created) is selected or inserted, updated or deleted.
A trigger is used to ensure that certain jobs are automatically done when a predefined event occurs. Both the event and the resultant action typically happen within the database.
First answer by Vbala 99. Last edit by Harithaveni. Contributor trust: 12 [recommend contributor]. Question popularity: 41 [recommend question]
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