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