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MySQL 5.0 Certification Study Guide by Carsten Pedersen, Stefan Hinz, Paul DuBois

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19 Triggers

A trigger is a database object that is associated with a table and that is defined to activate (or “trigger”) when a particular kind of event occurs for that table. This chapter describes how to define and use triggers in MySQL. It covers the following exam topics:

Image Reasons to use triggers

Image Trigger concepts

Image Creating and dropping triggers

Privileges required for triggers

The examples in this chapter require a table that can be modified. ...

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