I have a file that I want to monitor for a change to a specific field.
If this field becomes negative, I want to set it to zero.

The file is updated by many programs and is my inventory master, so there
are a large number of transactions all day.

Is a trigger the best way to do this?
If not, what would be the best method with the least impact on performance?
If so, what is the impact on performance?

The system is at release V7R1M0 L00 TL12115

Jeff Young
Sr. Programmer Analyst

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