Creating a Table or View Trigger

You can create a trigger for a table from its property sheet and base it on a PowerDesigner template, or on a template of your own, or write it from scratch.

1. Open the table or view property sheet, and then click the Triggers tab.
2. Click the Add a Row tool to create a new trigger, enter a name and code, and then click the Properties tool to open its property sheet.
3. Click the Body tab, and select a trigger template (see Trigger Templates) from the Template list. The time and event fields will be set and the template code copied into the editor.
   
   
   

   Note You can create a trigger by entering code by hand, but we recommend that you use a template as this will simplify reuse of your code and make your triggers more portable.
4. [optional] Modify the trigger code. You can insert trigger template items (see Trigger Template Items), use PDM variables and macros and various other tools available from the toolbar (see Writing SQL Code in PowerDesigner).

   If you edit the code, then the trigger will be marked as user-defined and will be excluded from most forms of rebuilding (see Rebuilding Triggers).

5. Click OK to return to your model.