Full House Facts

This was my favorite show when I was a kid and I was happy to see that it was back on Nick at Nite. However, I couldn't remember one very basic fact about the show. I know that Uncle Joey was played by Dave Coulier and that Uncle Jesse is played by John Stamos. I vaguely remembered that Uncle Jesse was Danny's brother in law. However, I thought that Uncle Joey was Danny's college roommate but Wikipedia says that he was just a best friend.