How do I store elapsed time?
I'm thinking lowest needed increment, i.e. "minutes" in this case.
I can transform minutes to hh:mm or 99.9 hours at the GUI level, right?
The application, by the way, is a timesheet application, where the largest entry would be 23:59 and the smallest could -- I guess -- be one minute (probably 15 minutes).
Sound right to you?