0Internal .NET Framework Data Provider error {0}. CUnable to delete the database. There is no database that corresponds to the given AttachDBFileName. QUnable to complete operation. The supplied SqlConnection does not specify an initial catalog or AttachDBFileName. The current migration SQL generator ({0}) is unable to generate SQL for operations of type '{1}'. Call SetSqlGenerator on your migrations configuration class to use a different SQL generator. To create a custom SQL generator that can handle this type of operation, add a new class that derives from {0} and override Generate(MigrationOperation). This operation requires a connection to the 'master' database. Unable to create a connection to the 'master' database because the original database connection has been opened and credentials have been removed from the connection string. Supply an unopened connection. Unable to update the EntitySet '{0}' because it has a DefiningQuery and no < {1}> element exists in the < {2}> element to support the current operation.