在分布式数据库系统中，数据库复制对于系统的可靠性及效率起着非常关键的作用。
In distributed database systems, database systems for the reproduction of the reliability and efficiency play a very crucial role.
在大规模的分布式数据库系统中，数据库复制对于系统的可靠性及效率起着非常关键的作用。
In the extensive distributed data base system, the data base duplication plays a very key role to the dependability and efficiency of the system.
嵌入式实时数据库系统常常在无人工干预的情况下运行，因此必须具备较高的可靠性。
Embedded real-time database systems must has high reliability because it usually run without human inter-fere.
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