Thanks for everyone's suggestions. I found the following, which at least seems to meet my needs temporarily.

   http://citeseer.ist.psu.edu/dong99maintaining.html

Should it turn out that this is not feasible to implement via triggers in PostgreSQL, I may be back with more questions and seek out a route that involves modifying the database or other such things.

--
Chris Smith - Lead Software Developer/Technical Trainer
MindIQ Corporation

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