Yeah, in this case, where you want to keep orphaned records, you do not want to create the relationships in the database. instead you want to manage the relationships in the application.
Your friends over here at WebAssist! These Dreamweaver extensions will assist you in building unlimited, custom websites.
These out-of-the-box solutions provide you proven, tested applications that can be up and running now. Build a store, a gallery, or a web-based email solution.