Use Trigger or Query for Deltas

Hi Gurus,
It has come up that my boss wants us to use a trigger on one of the most critical talbes we use for our website. Instead I have suggested to query for deltas and feed them out on time intervals.....which method is the least performance impacting on our db?
Any info/suggestions would be much appreciated.
S

Hi,
ScarpacciOne wrote:
When is it a good idea to use triggers? What scenarios are a good fit to implement a trigger?DML triggers are great for autiomatically supplying or correcting data entry.
For example, supplying an id number from a sequence when a new row is inserted, or filling in last_modify_date and last_modify_user columns.
Sometimes you can autiomatically correct data entry errors. For example, if a string is supposed to be all upper-case, or a DATE column is supposed to be midnight. You can (and should) have CHECK constraints to make sure people don't enter bad data, but sometimes you can safely say "I'm sure he meant 'ACTIVE', even though he said 'active'", or "I'm sure she meant TURNC(SYSDATE), not SYSDATE", and avoid having any error.
DML triggers are the only way to ensure something is done the as soon as some DML is performed. If it can wait, even a few minutes, then some othe mechanism (like a scheduled job, or a materialized view) can probably handle the situation more easily and reliably.

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