date/time stamp for database

[rhatcher]

I have a master shape group in which the parent and each child shape
contain custom properties linked to an Excel spreadsheet. I've added
a shape to the group to display the date and time of the last access to
the database. I'm assuming I need to use and event to trigger the
date/time but I cannot identify the event.

Is there a specific event that fires when a database is refreshed?

Should I approach this differently?

Be specific if you can.

Thanks
Robert