- Server login name, refers to the user has permission to log on to a server;
- Login name must belong to certain roles, the default is public
- Server roles, refers to a fixed set of server users
- Server role does not allow changes
- Not necessarily have permission to operate after logging database
- Database user, means that the user has permission to be able to operate the database
- Database user login name corresponding to the server so that registrants can work with databases
- Database role, refers to a set of fixed database role has certain privileges
- Database role can add, different permissions can be customized
- After the server requires a login name to the database user has permission to operate the database mapping
- Database user belongs to a group database role for permission to operate the database
Log summary comparison of the relationship between users and permissions, server roles, database roles
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Origin blog.csdn.net/weixin_43701790/article/details/103602154
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