本文讨论了计算机系统的安全问题，重点放在分布式系统和网络的安全方面。

The problem of computer system security is discussed with emphasis on distributed system and computer network security in this paper.

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计算机系统和网络的安全是分布式数据库系统安全的基础。

Computer system and network security are basis of security of distributed database system.

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阐述了分布式计算机系统的基本原理以及互连方式，对其功能、特点进行了分析。

This paper expounds the principles of the distributed computer system and the patterns of inter-connection and analyses its functions and special features.

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