Yes, the current DB has a lot of items in it (and Jenniy's Two-tone Cuirass is a rather nice BP, rare drop, but that might be because Grieg Veneficius is doable with 2 groups of people).
It would be nice if someone made a script to extract all items from Magelo and Allakhazam to make the DB even more complete
Edit : The thing about editing items directly into the sql file is a bit tricky, since items in the mysql database consist of an ID field and a BLOB that stores all other information. So what you basically need to do is figure out how the struct in the BLOB is organized and then set the parameters, but as Lurker says, use the eqadmin tool. It's much easier that way (or write your own tool, but that requires info about the struct aswell). Info on the struct can be found in one of the files in the source though.
Ztaar
-- Nunc ille est magicus --