Not directly.
With a split application (front-end contains queries, forms, reports, macros
and modules, back-end contains tables and relationships), you can put logic
in your front-end database to backup the back-end database as long as no
other users are trying to use it.
Another approach might be to use MichKa's TSI SOON (Shut One, Open New)
database add-in, which would let you fire up another database that would
backup your "current" one
http://www.trigeminal.com/utility.asp?ItemID=8#8
You could also look at Total Visual Agent, from FMS.
http://www.fmsinc.com/products/agent/index.html
