The managers of each department are members of an additional group, WidgetManagers. Let’s say that the employees within the Widgets department are members of the same network security group, Your database objects into schemas, the dbo schema is available.įigure 1: AdventureWorks tables with schemas. Removed from the database, the owner of the schema can be changed without breaking any code. So, if an account owns a schema and the account must be The schema has an owner, but the owner is not tied to the name. Is that the schemas can be used to simplify managing permissions on tables and other objects.
User accounts, you do not have to worry about changing the owner of objects when an account is to be removed. First of all, since the objects are not tied to any This looks similar to the old owner concept, but has many advantages. (Figure 1), you will see that the tables are organized by department or function, such as “HumanResources” or “Production”. If you take a look at the AdventureWorks sample database I like to think of schemas as containers to organize objects.
CHANGING OWNERSHIP OF A NETWORKVIEW OBJECT CODE
The code would not have to use the fully qualified name, though there is a slight performance gain in doing so and is If the dbo had owned the table from the start, there would have been no problem removing Ted’s account. If the table has been used in applications or referred to in any definitions such as stored procedures, changing the owner If Ted leaves the company or department and his account must be removed from the database, the ownership of the table must be transferred to another user account using the sp_changeobjectowner stored procedure before Ted’s account can be removed. In order for users other than Ted to see the table, it must be referred to by the fully qualified name. For example, if a non-dbo database user called “ted” creates the sales table, it will be called ted.sales. If an object is owned by an account other than dbo, the ownership must be transferred to another user if the original account is to be deleted. Users in the database will be able to access any object owned by dbo without specifying the owner as long as the user has appropriate permission. You will always have a dbo user in the database. Using dbo as the owner of all the database objects can simplify managing the objects. Object Ownership for an in depth discussion of this issue Even then, under certain circumstances, the owner will end up being the actual user Only user accounts in the db_owner roleĬan create objects owned by dbo. (the account must have CREATE TABLE permission) will also own the object. By default the user account that creates the object It is also possible for someone in theĭb_owner role to create an object owned by any user in the database. How does an object get its owner? It depends on the user who created it. To user abc, the table will now be named abc.orders.
See using SQL Server Enterprise Manager or Management Studio when you are viewing a list of the tables.įor example, the name of a table called orders owned by dbo is dbo.orders. The way to determine the owner is by looking at the fully qualified object name which you can It is possible that an object can be owned by any user account Owner is “dbo”, also known as the database owner. When an object is created in SQL Server 2000 or earlier, the object must have an owner.
To understand the difference between owners and schema, let’s spend some time reviewing object ownership.