http://www.developer.com/open/article.php/998241 http://www.developer.com/open/article.php/998241 gives a decent overview. My tip is to also track versions of

http://www.developer.com/open/article.php/998241 http://www.developer.com/open/article.php/998241 gives a decent overview. My tip is to also track versions of all prod deployments so you know which one was active in production when.