I'm pretty sure that your not able to do it so nicely that way because address book doesn't really have a database file that you can move around (at least I think so).
Anyways, what you can do is make an archive by going to File>Export>Address Book Archive, then put it on your flash drive and delete whatever you have in Address Book. Whenever you need to use Address Book you open that file, but afterwards you would have to re export then delete everything in Address Book.
Personally I use Now Up-to-Date & Contact which has both a calendar and database for almost everything. It also has a database file that you can move around wherever you please.