I have an existing application that I need to setup a forum type system. Now this isn't going to be a major deal, simply a way for 6 or so people to discuss changes planned on our site. In other words, simple is fine and I am going to most likely program it.

I was wondering if someone has any example databases where I can just examine the structure of how threads are stored. My 1 question has to do with how I mark the 1st thread in a forum ( would I just search for the oldest post ? )

Also, just simply how a forum is organized. I am not talking about vB or phpBB style .. nothing fancy, I am just looking for the most basic functional design I can follow.