摘要
针对移动环境下的数据冲突和冲突消解处理的不足,提出基于Web内容和数据集同步的同步复制模型。移动设备端缓存两种不同粒度的数据,采用"订阅-取消订阅-订阅"的方式提供个性化的数据,以两种不同的同步策略:即用客户端限定时间偏差的方法,解决Web页面冲突;用同步预处理的方式减少数据库同步时上行的数据传输量,同时用基于优先级和事务协调相结合的方法解决数据库冲突,从而解决了模型冲突处理问题。
Focused on the conflict avoidance and reconciliation problem, a new model of synchronization and replication was proposed. The mobile client cached data with two different granularities. Adopting the mode of ＂Subscribe - Cancel - Subscribe＂, it provided customization caching data. Two synchronization strategies were put forward. Client qualified timestamp was used as the swap strategy to solve the Web content conflict and the pretreatment mode before synchronization to reduce the upload data when the mobile client synchronized with server. The combination of priority and transaction cooperation was done to solve the database conflict. The two methods resolved the issue of the data conflict for this model.
出处
《计算机应用》
CSCD
北大核心
2008年第10期2544-2547,共4页
journal of Computer Applications
关键词
移动计算
移动数据库
同步复制
mobile computing
mobile database
synchronization and replication
