Projects :: Tzeentch
Tzeentch is a PHP library to manage the changes of SQL schema. Currently, it supports only MySQL, but could easily include other SQL systems. The schema is kept in an XML file. The Tzeentch libraries read the XML file, determine what the current configuration of the existing DB is, and then add, drop or change columns appropriately.
The current release is [VERSION].
Of course, Warhammer 40,000 fans will recognize the name Tzeentch as the Chaos God who is the Changer of Ways.