A dedicated administrator was established on the server database because the test wanted to delete it, but always prompted that the user has a schema that cannot be deleted, and the schema shows that db_owner cannot be changed, I am using sqlserver2008. Deleting a database user in SQL Server2000 is as simple as deleting it directly or using the drop User command, but the direct operation in SQL Server2008 is not possible because the schema is treated as an entity in SQL Server 2008. So to delete the user, you need to first delete the schema owned by the user or change the owner of the schema. Otherwise, the database principal has a schema in the database and cannot be deleted.
I did a search. know that each database user corresponds to a system login account, and each schema can only be given to one user. So directly delete the user's schema is not possible, then I will create a new login, and in the user mapping to the db_owner schema to pay him, and then can delete the previous user.
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The database principal has a schema in the database and cannot remove the workaround
