To add an external trigger to a table:
Notes:
The trigger program must exist before you can add it as an external trigger. If you are adding a trigger on a pre-V5R1 system, you can only specify the program name and schema on the General tab and the timing and operation on the Event tab. In addition, on pre-V5R1 system, you can only add one trigger for each event and time combination (in other words, a maximum of six triggers to a table.
Use caution when adding read triggers. Read triggers can cause your system performance to degrade.