How do you version your database schema? [closed]
See
Is there a version control system for database structure changes?
How do I version my MS SQL database in SVN?
and Jeff's article
Get Your Database Under Version Control
I feel your pain, and I wish there were a better answer. This might be closer to what you were looking for.
Mechanisms for tracking DB schema changes
Generally, I feel there is no adequate, accepted solution to this, and I roll my own in this area.
If you are still looking for options : have a look at neXtep designer. It is a free GPL database development environment based on the concepts of version control. In the environment you always work with versioned entities and can focus on the data model development. Once a release is done, the SQL generation engine plugged on the version control system can generate any delta you need between 2 versions, and will offer you some delivery mechanism if you need.
Among other things, you can synchronize and reverse synchronize your database during developments, create data model diagrams, query your database using integrated SQL clients, etc.
Have a look at the wiki for more information : http://www.nextep-softwares.com/wiki
It currently supports Oracle, MySql and PostgreSql and is in java so the product runs on windows, linux and mac.