Creating a trigger

When you create a trigger, you specify the table affected and the command (insert, update, or delete) that activates the trigger. You also specify the action the trigger is to take.

Privileges

Only a table owner or database owner can create a trigger.

Creating a trigger

In the table, select the Triggers folder.

Select File | New | Trigger. The Trigger Creation wizard opens.

The Trigger Creation wizard asks for the following information:

**Table 21-1: Inputs to the Trigger Creation wizard**
Input	Description
Name	Name for the new trigger.
Owner	Specify the user who owns the trigger.
Event	Specify the events that can fire the trigger: Insert, Delete, Update, Update of a column.
Code	Enter the code for the trigger in the editor. This text can consist of any valid SQL statements that would follow the as keyword in a create trigger statement.

A trigger can also be created using the Add Trigger template. Double-click the Triggers icon of the table you want to add a trigger to. Select Add Trigger (Template).

Shortcut

Select the Triggers folder. In the right pane, double-click the Add Trigger icon.