The requirement was that post the application being brought down, there should not be any changes to the databases by any other means like running a query through query anaylser....

Thanks, the jobs would not be making changes as anticipated, however need to take into account any sort of data change.

Thanks , however as per the 1st Link posted by you in SQL Server 2012 Edition Upgrade Tab it states :

Upgrading from Evaluation Enterprise (a free edition) to any of...