Referential Integrity is when the rows from one table are “cross-referenced” and verified with those in another table. This tutorial will walk you through using MySQL to enforce this rule.
Introducing WootStat, the premier Woot tracker for Facebook. Mike and myself decided to work with the Facebook API. We ended up created a cool application for tracking items on Woot.com. After checking out the competiton we stack up pretty well. I think we have the most features of any WootTracker on Facebook.