postgresql Tutorial => Triggers and Trigger Functions

Introduction

The trigger will be associated with the specified table or view and will execute the specified function function_name when certain events occur.

Please use below link for complete overview of:

Triggers: https://www.postgresql.org/docs/current/static/sql-createtrigger.html
Trigger Functions: https://www.postgresql.org/docs/current/static/plpgsql-trigger.html

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