Donor Manager Software

I'm helping a number of staff in our organization set up their own DM. I need to know how I can "start from scratch" a totally new donor database. In other words, how can I completely delete existing data so I have a clean slate from which to set up a database for a different staff member? (I would ...

I work in the home office and several of our field staff use DM. Occasionally they want me to work on their mailing list in DM. How can I disconnect or unlink DM from one mailing list file and then link it to another, and back and forth? Similiarly, how to I restart with a blank database, so I can i...