The new Migration feature is amazing. A-mazing.
In addition to migrating production servers from one version of your software to another, it's excellent for coordinating among a group of developers *AND* for coordinating between primary and test databases. Farewell SQL alter script coordination, it's been real ;)
If you haven't read it yet, I highly recommend reading this guide to migrating:
(Also, I recommend getting the bug-fix from the current yii trunk here: http://code.google.com/p/yii/source/detail?r=2907 which fixes the issue with the migrate not using the connectionId option properly.)
So, how do we actually apply this new wonderful feature? It's quite simple!