08-23-2012 09:20 AM
this might help you
08-23-2012 09:22 AM
08-23-2012 10:16 AM
As mentioned in the links provided by kamal you can try to delete the data/tables from the database. If you really want to delete the database file from the filesystem you can delete the app.
If using PlayBook or BB10, don't know if possible with other BB OS, I would try to use the Web Inspector to debug the app and delete the database's tables by hand if you only want to or could empty it.