It also lets you make up table relationships graphically if your back-end database supports that (i.e. innoDB).
It's only five bucks and is worth every penny.
Also I finally got to see the Comedy Central roast of William Shatner. It was a lot of fun, but it leaves the eternal question in my mind, "why on Earth was Farrah Fawcett not only on stage but allowed to speak?"
Best I can tell, she was there as a cautionary tale. She was propped up on stage to warn the world that there's a fine line between "America's Sweetheart" and "Crazy Cat Lady".