SS database questions

Hi gang.

Once again I am trying to make an XBase database (using MS-Access) of
Spelljammer... er, Skyships (SS) material.  I have tried this several times,
and each time it flopped.  This time I think it's gonna work.

My question for you folks is, if you had a database of fantasy space
material, what would you like to see in it?  At present, I have alloted
tables for:  Spheres, worlds, moons, astronomical objects, ports of call,
spacefaring races, ships, and even monsters.  Should I include other things?
 If so, what?

There is no test data in there at the moment.  Only the structure of the
database is defined.  This pet project of mine has undergone so many tests it
isn't funny.

At present this is just a personal project, but if I can get everything to
work correctly, I'll try and lift the database out of MS-Access and into a
self-contained application, and distribute it.

Incidently, I'm doing this as much for professional practice as for fun.  I
tell people that I know how to construct relational databases.  Perhaps I
should actually sit down and make one, just to be sure...

Thanks.

Rich