There are several types of mysql triggers

There are six types of mysql triggers, namely: 1. Before Insert; 2. After Insert; 3. Before Update; 4. After Update; 5. Before Delete; 6. After Delete.

A trigger refers to a piece of code that is automatically executed when a certain event is triggered

There are six in the MySQL database Type of trigger:

• Before Insert

• After Insert

• Before Update

• After Update

• Before Delete

• After Delete

Usage scenarios:

• Cascading changes can be implemented through related tables in the database

• Real-time monitoring of tables Changes in the fields in the field should be processed accordingly

Note: Abuse will cause difficulties in maintaining the database and applications

Related learning recommendations:mysql tutorial

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