Currently OpenAccess does not allow you to drop no longer used elements in the database. This is done with the presumption that even though OpenAccess is not using a given part of your database model this does not necesserilly mean that this part is not needed at all. Unfortunately there is no way that you can instruct OpenAccess to always drop tables and columns that are not mapped at the moment.
Can you please share with us how important is that for you?
the Telerik team
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