%0 Journal Article
%T View-Refreshing Strategy in Web Repository<br>Web仓储系统的视图刷新方案
%A ZHANG Yan YANG Dong-Qing TANG Shi-Wei
%A <br>张岩
%A 杨冬青
%A 唐世渭
%J 计算机科学
%D 2003
%I 
%X Web repository utilizes materialized views to integrate information,so the most important task for it is to refresh the views periodically to keep its vitality. The goal of view refreshing is to obtain the maximal system freshness, however, most of traditional standards do not consider query effect so that the corresponding view.refreshing scheme is usually inefficient. In this paper,we first bring forward a more reasonable standard for system freshness, thereafter make a comprehensive discussion upon system refreshing frequency, system resource allocation and view.refreshing order. After analyzing the effect and function to system freshness for each factor,we give a general strategy for materialized view refreshing.
%K Web repository
%K Materialized view
%K View-refreshing
%K System freshness<br>WWW
%K 网络带宽
%K 视图刷新
%K 信息集成系统
%K Web仓储系统
%K 信息资源
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=64A12D73428C8B8DBFB978D04DFEB3C1&aid=00FEED14F3669294&yid=D43C4A19B2EE3C0A&vid=340AC2BF8E7AB4FD&iid=DF92D298D3FF1E6E&sid=13553B2D12F347E8&eid=659D3B06EBF534A7&journal_id=1002-137X&journal_name=计算机科学&referenced_num=0&reference_num=9