使远程用户能在本地引用复制的数据完成分布式操作，减少网络和中心数据库服务器的负载。

The remote users can take distributed operation on the replicas, then cut down the load of network and center database server.

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服务器端的设计包括建立中心数据库，开发了同步服务程序，它负责处理客户端请求及同步双方数据。

In server side, the author creates center database and develop synchronization server program which takes charge of dealing with client request and synchronizing data between client and server.

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