The deployment ID is used to support a new rollback type 'rollback last update'. All the changesets that are applied to a database in a single update operation are given the same deployment id. Prior to this change that feature would need to be based on the deployment timestamp, which was not reliable.
Steve Donie
Principal Software Engineer
Datical, Inc. http://www.datical.com/
Steve Donie
Principal Software Engineer
Datical, Inc. http://www.datical.com/