For a similar tool for Sybase, see dbschema.pl1. I wrote the original version of this tool many years ago, but it's still as useful, letting you reverse engineer an entire Sybase database...
1. It seems that this site is currently down, however.
The same name on every site (unless it is taken already)
A different name for every site
The same name for sites I don't care about, but different names on sites I do care about
Different names for sites I don't care about, but the same name on sites I do care about
The anonymous account
Someone else's username
Root, after hacking into the site
Results (232 votes),