【作者】 陈霞； 张孝； 孟小峰； 王珊；

【机构】 中国人民大学数据与知识工程研究所；

【摘要】 <正>一、引言移动通讯技术的迅速发展以及移动计算设备的大量普及促进了移动计算环境的形成。通过无线联网设备人们可以在自由移动的同时保持与固定主机或移动主机的连接,访问网络中的各种信息。更多还原

【Abstract】 Mobile-clients often disconnect or weakly connect with servers in the mobile computing environment. The disconnection may result in the inconsistency between replica on the mobile devices and data on the servers or among the replicas.In this paper,a solution to synchronize data based on tablelevel asynchronous multi-master replication is presented.In above method master on the mobile devices invokes the synchronization asynchronously,table with tuple-level operation flag as unit of synchronization. This technique,by using partial timestamp and extended log,is suitable for such cases of applications as data-collecting,mobile selling and so on.更多还原