As far as I know , most databases have their own proprietary way of dealing with schema upgrades and rollbacks, you will need to understand how its done in DB2

As far as I know , most databases have their own proprietary way of dealing with schema upgrades and rollbacks, you will need to understand how its done in DB2 , Oracle, MySQL etc and then create a common pattern out of it. http://www.onlineprogrammingbooks.com/download-pdf-foundations-of-databases-the-logical-level-alice-book/ http://www.onlineprogrammingbooks.com/download-pdf-foundatio...