All this has utility worthiness, and could be a reference for further development.
本论文的工作具有实际意义，并对后继开发具有一定的参考价值。
It is in the actual database management system development process has great utility and flexibility.
它在实际的数据库管理系统的开发过程中具有很大的实用性和灵活性。
It is in the actual database management system development process has great utility and flexibility.
它在实际的数据库管理系统的开发过程中具有很大的实用性和灵活性。
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