Editing Database trigger (section)

=== MySQL/MariaDB ===
Limited support for triggers in the MySQL/MariaDB [[DBMS]] was added in the 5.0 version of MySQL, launched in 2005.<ref>MySQL 5.0 Reference Manual. [https://downloads.mysql.com/docs/refman-5.0-en.pdf "Triggers.  MySQL 5.0 added limited support for triggers"], ''[[Oracle Corporation]]'', Retrieved on 4 March 2020.</ref> 

As of version 8.0, they allow for DDL (Data Definition Language) triggers and for DML (Data Manipulation Language) triggers. They also allow either type of DDL trigger (AFTER or BEFORE) to be used to define triggers. They are created by using the clause ''CREATE TRIGGER'' and deleted by using the clause ''DROP TRIGGER''. The statement called upon an event happens is defined after the clause ''FOR EACH ROW'', followed by a keyword (''SET'' or ''BEGIN''), which indicates whether what follows is an expression or a statement respectively.<ref>{{Cite web|url=https://dev.mysql.com/doc/refman/8.0/en/trigger-syntax.html|title = MySQL :: MySQL 8.0 Reference Manual :: 25.3.1 Trigger Syntax and Examples}}</ref>