Some of the selected database objects will not be deleted because they are open in designers.
Some of the selected database objects are open in one or more designers. You cannot delete objects that are open in designers. However, the delete process can still proceed to permanently delete the other database objects.
Click Yes to delete the remaining database objects, or click No to avoid the deletion process. If you click No, none of the database objects are deleted.
See Also
Other Resources
Working with Database Diagrams (Visual Database Tools)