When an object is created in SQL Server 2000 or earlier, the object must have an owner. Most of the time, the owner is “dbo”, also known as the database owner. It is possible that an object can be owned by any user account in the database. The way to determine the owner is by looking at the fully qualified object name which you can see using SQL Server Enterprise Manager or Management Studio when you are viewing a list of the tables. For example, the name of a table called orders owned by dbo is dbo.orders. If the table’s ownership is transferred to user abc, the table will now be named abc.orders.
for more refer:
http://www.sqlteam.com/article/understanding-the-difference-between-owners-and-schemas-in-sql-server[
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