[plt-scheme] data persistence

OK, I think I'm going to bite the bullet and run a real database
server, because there are enough other things I want to do that would
probably be easiest that way.  So, what are the relative advantages of
MySQL, Postgres, etc?  I realize this is a generic database question,
but since I'll mostly be interacting with it via Scheme I figured it'd
be okay to ask here.

--dougo at place.org