%0 Journal Article
%T Query scheme and its optimization for distributed data stream<br>分布式数据流查询方案及优化
%A XU Shu-hua
%A HU Jun
%A <br>徐署华
%A 胡君
%J 计算机应用
%D 2009
%I 
%X Stream database systems are a new type of database system designed to facilitate the execution of queries against continuous streams of data. Many stream-based applications are inherently distributed, Since input stream rates and other system parmeters such as the amount of abailable computing resources can fluctuate significantly, a stream query plan must be able to adapt to these changes. Propose a distributed stream query plan and optimized, use tuple response time and system throughput to evaluate the performance of plan. Compare with other plan by experiments.Proved this plan is optimal.
%K distributed data stream
%K query plan
%K query optimization
%K routing policy<br>分布式数据流
%K 查询方案
%K 查询优化
%K 路由策略
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=246EA06C1169D04CC33C4E4B72906B03&yid=DE12191FBD62783C&vid=771469D9D58C34FF&iid=DF92D298D3FF1E6E&sid=8A16493E4294FD55&eid=CC25DB91403D0902&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=7