摘要： 介绍一种名为的混合方法,它在用户查询时产生并进行物化存储,但基础数MEDI(Materialize on accEss and upDate hIstory)WebView 据变化时它并不一定立刻变化,而是参考该以前的访问和更新历史,然后采取相应的对策和方法。实验数据表明,算法对于WebViewMEDI更新和访问都比较频繁的环境具有较好的适应性,性能优于纯虚拟或物化算法。Web

关键词: WebViewWeb, 物化视图, 虚拟视图, 基础数据

Abstract: This paper introduces a hybrid strategy named MEDI(Materialize on accEss and upDate hIstory). MEDI constructs WebView when receives a user query and stores it in the system. Each WebView can have three statuses: A(Active),S(Sleeping) and M(Median). Each status has its own using and maintenance policy. When base data updates, WebView transfers among these statuses based on its access and update history. According to the experimental data, MEDI is scaleable and adaptive to the Web environment that has high access frequency and high update frequency. Experimental data also shows that MEDI has better performance than virtual policy and materialized policy. ;;;

中图分类号: 

• TP393.07