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.
随着互联网和分布式数据库系统的广泛应用，如何保证多个数据库之间的数据一致已成为系统可靠运行所要解决的重要问题。
With the wide application of the internet and the distributed database system, it has become more important to guarantee data consistency of multi-database for system to run reliably.
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