| 移动计算环境下的一种同步复制模型 |
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| 引用本文： | 陈历胜,郭海滨,叶飞跃. 移动计算环境下的一种同步复制模型[J]. 计算机应用, 2008, 28(10): 2544-2547 |
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| 作者姓名： | 陈历胜 郭海滨 叶飞跃 |
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| 作者单位： | 胜利油田有限公司,物探研究院,山东,东营,257000;上海大学,计算机工程与科学学院,上海,200072 |
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| 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。
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| 关 键 词： | 移动计算 移动数据库 同步复制 |
| 收稿时间： | 2008-04-21 |
| 修稿时间： | 2008-05-29 |
Synchronization and replication model in mobile environment |
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| CHEN Li-sheng,GUO Hai-bin,YE Fei-yue. Synchronization and replication model in mobile environment[J]. Journal of Computer Applications, 2008, 28(10): 2544-2547 |
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| Authors: | CHEN Li-sheng GUO Hai-bin YE Fei-yue |
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| Affiliation: | CHEN Li-sheng1,GUO Hai-bin1,YE Fei-yue2(1. Geophysical Institute,Shengli Oilfield,Dongying Sh,ong 257000,China,2. School of Computer Engineering , Science,Shanghai University,Shanghai 200072,China) |
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| Abstract: | 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. |
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| Keywords: | mobile computing mobile database synchronization and replication |
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