Hi, I have a problem on how to design the database for the website I m trying create. I have skins for iPhone,iPod Touch and other iPods. Not all the skins are compatible with all the ipods. I also want to track my inventory. By using php i want to list skins that are compatible with particular iPod at the same time I should be able to select a skin and see which iPods are compatible with it. How would you create tables in such a database?