In this paper, The idea of mapping multilevel secure database into several databases, and each subject operates on database trusted by himself is introduced.
本文提出了将多级安全数据库映射成为多个数据库，各个用户在其信赖的数据库上进行操作的思想。
JPQL is a full-featured query language with syntax similar to SQL, but it operates on entities rather than database tables.
JPQL是一种语法上类似于SQL的完备查询语言，但是它是在实体上，而不是在数据库表上进行操作。
The name of the database on which the tool operates.
该工具所操作的数据库名称。
The name of the database on which the tool operates.
该工具所操作的数据库名称。
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