I'm too uncreative to come up with something of my own, but refining what others have proposed, for a stylish one you could try use DBI; - or maybe $ perl -MDBI (I really like that latter one :-) ). On the other hand, for a real business card you should use a serious title, or at least put it there in addition. If you don't want it to be really boring but serious enough to give a client, you might try something like Database Craftsman.

Makeshifts last the longest.