摘要： 提出逻辑事务处理的概念，使用参数化的数据库查询语句解决以服务器为中心的系统的子集化问题，设计一个可以应用于数据子集的稳定可升级的方案。测试结果显示，与基于传统事务处理的数据同步方案相比，该方案的异步属性使之更适合于服务器数据库和客户端数据库网络连接较弱的情况。

关键词: 数据库, 数据同步, 普适计算, 数据复制

Abstract: This paper introduces the concept of logical transaction for synchronization of the data subsets. It uses parameterized database queries to do data sub-setting for the server centric system. It designs a stable scheme that can be applied to subsets of data. Test results of an implementation show compared with traditional physical transaction based replication schemes, the asynchronism of this scheme makes it more suitable for weakly connected situation.

Key words: database, data synchronization, pervasive computing, data replication

中图分类号: 

• TP311.13