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应用科学学报 ›› 2006, Vol. 24 ›› Issue (5): 509-513.

• 论文 • 上一篇    下一篇

在线更新物化Web视图

张柏礼, 孙志挥, 杨宜东, 周晓云   

  1. 东南大学计算机科学与工程系, 江苏南京 210096
  • 收稿日期:2005-06-22 修回日期:2005-12-05 出版日期:2006-09-30 发布日期:2006-09-30
  • 作者简介:张柏礼,博士生,研究方向:数据仓库、数据挖掘等,E-mail:bailey_zhang@163.com;孙志挥,教授,博导,研究方向:复杂系统信息集成和数据库系统及应用,E-mail:sunzh@seu.edu.cn
  • 基金资助:
    国家自然科学基金资助项目(70371015)

Online Update of Materialized WebView

ZHANG Bai-li, SUN Zhi-hui, YANG Yi-dong, ZHOU Xiao-yun   

  1. Department of Computer Science and Engineering, Southeast University, Nanjing 210096, China
  • Received:2005-06-22 Revised:2005-12-05 Online:2006-09-30 Published:2006-09-30

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摘要： 提出一种基于异步更新和延迟更新相结合的算法ADUA,其中异步更新机制充分利用系统的空闲时间对尽可能多的失效视图进行刷新,对那些没有得到及时更新而被查询的物化视图,则利用延迟更新进行处理而确保查询的时新性.ADUA算法不但可保证数据的时新性,而且通过对系统资源合理的调度,可提高算法在不同负荷条件下的适应能力,进一步降低更新开销对查询响应速度的影响,使Web视图的物化效益得以充分发挥.

关键词: 物化, Web视图, 更新

Abstract: WebView materialization is an important method to improve the query response performance of a web server. As opposed to data warehouse in which updates are usually performed off-line, updates of materialized WebView need to be done online.However, there is little research on the issue.This paper gives a review and proposes an asynchronous and deferring update approach (ADUA), which is composed of synchronous inspection of materialized WebView update (SUIMW), deferring update of materialized WebView (DUMV) and asynchronous update of materialized WebView (AUMW).The approach combines asynchronous update and deferring updating to realize the freshness of materialized WebView efficiently, and can significantly accelerate response to queries.

Key words: WebView, materialization, update

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