Background
I came from several years working in a company where all the database objects were stored in source control, one file per object. We had
There's a special tool for this exact thing. It's called Wizardby:
...database continuous integration & schema migration framework
Wizardby Workflow http://octalforty-wizardby.googlecode.com/svn/trunk/docs/img/database_versioning_with_wizardby.png