A trigger is like a stored procedure that Oracle Database invokes automatically whenever a specified event occurs.

• Overview of Triggers

• Reasons to Use Triggers

• DML Triggers

• Correlation Names and Pseudorecords

• System Triggers

• Subprograms Invoked by Triggers

• Trigger Compilation, Invalidation, and Recompilation

• Exception Handling in Triggers

• Trigger Design Guidelines

• Trigger Restrictions

• Order in Which Triggers Fire

• Trigger Enabling and Disabling

• Trigger Changing and Debugging

• Triggers and Oracle Database Data Transfer Utilities

• Triggers for Publishing Events

• Views for Information About Triggers