%0 Journal Article
%T The Design of Low-cost Query Middleware in Grid Database<br>基于低耗费调度的网格数据库查询中间件的设计
%A HU Nai-jing
%A LUO Yuan
%A <br>胡乃静
%A 罗远
%J 计算机应用
%D 2007
%I 
%X Grid Database is a new research area in Grid and Database. There is new requirement for query plan optimization in this area. This paper described the data relation between sub-query and database nodes, and gave a query middleware Low-Cost Query Middleware (LCQM) based on low-cost model. An algorithm of low-cost query plan was proposed. Experimental results demonstrate the enhanced efficiency of the query plan.
%K grid database
%K cost model
%K sub-query<br>网格数据库
%K 耗费模型
%K 子查询
%K 调度计划
%K 网格数据库
%K 查询中间件
%K 设计
%K database
%K grid
%K middleware
%K query
%K 效率
%K 实验验证
%K 算法
%K 评估模型
%K 时间
%K 关联关系
%K 节点
%K 分析
%K 优化调度
%K 子查询
%K 查询分解
%U http://www.alljournals.cn/get_abstract_url.aspx?pcid=5B3AB970F71A803DEACDC0559115BFCF0A068CD97DD29835&cid=8240383F08CE46C8B05036380D75B607&jid=831E194C147C78FAAFCC50BC7ADD1732&aid=14E16CBD274305126241B1981AF0B576&yid=A732AF04DDA03BB3&vid=DB817633AA4F79B9&iid=0B39A22176CE99FB&sid=BFB86B6ED3A99B9D&eid=84A93BA251D28205&journal_id=1001-9081&journal_name=计算机应用&referenced_num=0&reference_num=9