Answer / Leena Rani

There are four types of SQL triggers: DDL triggers, Data Manipulation Language (DML) triggers, Logon triggers, and Logoff triggers. DDL triggers execute in response to database events such as creating or altering a table. DML triggers execute in response to data manipulation events such as inserting or updating a row in a table. Logon triggers execute when a user logs into the database, while logoff triggers execute when a user logs out of the database.

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