问题
I am working on an enterprise project. Some members of the team have an Oracle background and some have a Microsoft SQL Server background. There is much confusion when we talk about schemas. I am trying to provide some clarity. Is this an accurate way to describe the difference in the meaning of schemas between the two technologies?
- An Oracle schema is associated with a single user and consists of the objects owned by the user.
- A MS SQL Server schema is a namespace.
回答1:
Oracle schemas are like My Documents folders in the Windows OS. A user can grant permissions to other users to see things in their schema but an Oracle schema is essentially a user's workspace.
MS SQL Server's schemas are namespaces. While you can have Accounting and Marketing schemas, they are not tightly-coupled to individual users. Objects in an Accounting schema contain accounting information and objects in the Marketing schema have marketing information.
Oracle schemas are tightly-coupled to users and MS SQL Server schemas are primarily for classification.
See this question for more information: Difference between SQL Server and Oracle user
来源：https://stackoverflow.com/questions/5365368/what-is-the-difference-between-an-oracle-and-microsoft-schema