The Source Code - Multilevel Security for Relational Databases - page 167

USE [MLSDB]
CREATE USER [SUser] FOR LOGIN [SUser] WITH DEFAULT_
SCHEMA = [dbo]

GO
USE [MLSDB]
CREATE USER [TSUser] FOR LOGIN [TSUser] WITH DEFAULT_
SCHEMA = [dbo]

GO
USE [MLSDB]
CREATE ROLE [U] AUTHORIZATION [dbo]
GO
USE [MLSDB]
CREATE ROLE [C] AUTHORIZATION [dbo]
GO
USE [MLSDB]
CREATE ROLE [S] AUTHORIZATION [dbo]
GO
USE [MLSDB]
CREATE ROLE [TS] AUTHORIZATION [dbo]
GO

Figures 9.5-9.8 will introduce the properties of the roles that define
the security classification levels of the users in the multilevel rela-
tional database.

Figure 9.5 The properties of the U role in the database.