Question

What does trigger mean? What are its uses and explain its working
Make a comparison of before and after trigger. How a trigger can be
deleted?​

Answer 1

Explanation:

A database trigger is special stored procedure that is run when specific actions occur within a database. Most triggers are defined to run when changes are made to a table's data. Triggers can be defined to run instead of or after DML (Data Manipulation Language) actions such as INSERT, UPDATE, and DELETE.