计算机工程与应用2016，Vol.52Issue(1)：61-65,5.DOI:10.3778/j.issn.1002-8331.1312-0262
移动数据库中数据复制同步处理策略的研究
Research on synchronous processing strategy of data repli-cation in mobile database
摘要
Abstract
Synchronization is one of the key technologies in maintaining the consistency of replicated mobile database systems. The current mobile replication synchronization technology has many defects, such as the large amount of com-munication data and storage space consumption, especially, when the network bandwidth falls, it cannot update the client data timely, which lead to fail to perform mobile transactions. In order to solve the above shortcomings, the paper adopts UTLRSP(Union Transaction-Level Result-Set the Propagation)replication synchronization model combined with the data broadcasting technology, and by using the incremental updating algorithm based on priority to realize client and center database server data synchronization processing. Experimental results show that the model effectively reduces the consump-tion of client storage space and cuts down the communication costs compared with the two levels of replication mechanism. It associates the performing transaction with other transactions, and only saves transaction execution results. When the wireless network bandwidth falls, the algorithm prioritizes data according to the freshness. It ensures the highest freshness data transfer firstly. The algorithm improves the efficiency of data transmission, dynamic freshness and scalability for the client.关键词
移动数据库/关联事务结果集(UTLRSP)/复制/同步/冲突处理/动态新鲜度Key words
mobile database/Union Transaction-Level Result-Set the Propagation(UTLRSP)/replication/synchronization/conflict resolution/dynamic freshness分类
信息技术与安全科学引用本文复制引用
王瑞峰,张小花,张迎春..移动数据库中数据复制同步处理策略的研究[J].计算机工程与应用,2016,52(1):61-65,5.基金项目
甘肃省自然科学基金(No.1310RJZA046). （No.1310RJZA046）
