Handling Time

i'm wanting to timestamp database entries and i would
appreciate some feedback from the collective wisdom of
this thread.

what is the best way to do this?  are ther pitfalls to
avoid.

i have started using date, but thought there was a
remote chance i might need time, also.  is the db load
of storing time great enough that it isn't worth
storing time based on remote chances it *might* be
valuable?

tia...



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