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计算机工程 ›› 2012, Vol. 38 ›› Issue (17): 49-51,55. doi: 10.3969/j.issn.1000-3428.2012.17.014

• 软件技术与数据库 • 上一篇    下一篇

Ad Hoc网中的移动数据库应用

范 俊,李晓宇   

  1. (郑州大学信息工程学院,郑州 450001)
  • 收稿日期:2011-10-20 修回日期:2011-12-29 出版日期:2012-09-05 发布日期:2012-09-03
  • 作者简介:范 俊(1986-),男,硕士研究生、CCF会员,主研方向:移动数据库技术;李晓宇,副教授
  • 基金资助:
    国家自然科学基金资助项目(61073023);河南省教育厅自然科学基金资助项目(2010B520025)

Mobile Database Application in Ad Hoc Network

FAN Jun, LI Xiao-yu   

  1. (School of Information Engineering, Zhengzhou University, Zhengzhou 450001, China)
  • Received:2011-10-20 Revised:2011-12-29 Online:2012-09-05 Published:2012-09-03

摘要: 传统的移动数据库模型应用到Ad Hoc网中,会带来通信代价增大等问题。为此,对传统的移动数据库模型进行改进,加入本地服务器作为中介,形成由移动主机、本地服务器和主服务器3类结点构成的移动数据库模型,并提出2个算法用来解决模型中本地服务器与主服务器上的数据同步和事务重做问题,从而使移动主机能够高效正确地访问数据库。实验结果证明,该移动数据库模型具有较好的稳定性。

关键词: Ad Hoc网, 移动数据库模型, 本地服务器, 主服务器, 过时数据, 事务重做

Abstract: As a result that the traditional mobile database model can not adapt to the actual situation of Ad Hoc network, this paper improves the traditional mobile database model with adding a local server as the agent to adapt to the situation of Ad Hoc network, forming the mobile database model which comprises mobile computer, local server and master server. Furthermore, two algorithms which are used to solve problems of transactions redoing and data synchronization between local server and master server are proposed, so that mobile computer can access database efficiently and correctly. Experimental results show that mobile database model can gain good stability.

Key words: Ad Hoc network, mobile database model, local server, master server, outdated data, transaction redoing

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