Table timestamps?

[Jay Lawrence]

Hey all,

Is there a way to quickly obtain the last time a table was updated/touched?

In my app I am caching queries so long as the table data has not changed. I'd like a 
quick check to see if a table has changed since the query was first executed. My 
perusal of documentation plus a few searches on mailing lists has not uncovered this 
matter - but I could have missed it.

TIA,
Jay