It's best if you don't think of it as a database. You are wanting a lot more control over relationships than the wiki gives. If you think of the wiki as a group of flat files that are parsed for special codes and delimiters, you are much closer to how it actually works. (What the code parses out of that and stores in its database is what actually controls the wiki behind the scenes, but we have very little direct control over that.) Nothing is ever going to get automagically linked up. With some clever structuring and use of templating we can make up for some of the limitations, but all-in-all it works pretty darn well, and--best of all--editing a wiki is easy for beginners. You don't have to be experienced with DBs to make sense of it. Type what you want, put double brackets around links, and you're on your way.