Triggers in SQL are automated database actions that respond to events. Learn about their types, syntax, use cases, limitations, and best practices in SQL. SQL Server triggers are special stored procedures that are executed automatically in response to the database object, database, and server events. In this article, we learned what SQL triggers are and how to define and use them for PostgreSQL, MySQL, and SQL Server. We also demonstrated the differences in definitions for each one, statement-level triggers, and INSTEAD OF triggers. Triggers can be used to enforce complex business rules, maintain audit trails, or synchronize data across tables. In MySQL, triggers are useful concepts for automating and making sure of the integrity of database operations. MySQL Create Trigger The CREATE TRIGGER statement in MySQL is used to create a new trigger in the database.