At the moment, I'm doing a project which involves making our own CMS. My first priority is to make a Database where files (in my case foto's in the JPEG format) and info can be stored.
Now I'm quite stuck because I don't know what kind of tables I need to use in the database.
I allready have the following: a table to store the users (because u need to login first), a table for usergroups (each user belongs to at least one group), a table for albums, subalbums, a table where all the pictures are stored, and last but not least a table where all the EXIF info about the pictures are stored. The problem is that I need at least 10 tables, but I have really no idea what kind of tables I can add to the ones I have.
If someone could help me out, I'd really appreciate that.

Thanks in advance,
Greetz