网格环境下基于服务的分布式查询处理机制研究  

A Sevice-based Distributed Query Processing in the Grid

作　　者：谭跃生[1] 王静宇[1] 陈振江[2] 

机构地区：[1]内蒙古科技大学信息与网络中心,包头014010 [2]内蒙古科技大学信息工程学院,包头014010

出　　处：《计算机与数字工程》2010年第8期29-31,共3页Computer & Digital Engineering

基　　金：内蒙古自治区自然科学基金项目(编号:20080404ms0903)资助

摘　　要：OGSA-DQP是一种用于网格环境、基于服务的分布式查询处理系统,实现了运行在不同平台的分布式数据密集型应用的高级数据访问与集成服务方法,为用户提供一致的虚拟关系数据视图和分布式数据查询支持。文章描述了其体系结构、分析了其查询和优化机制,并在不同条件下测试了查询性能,为寻找系统查询性能瓶颈、提高系统查询响应时间提供依据。OGSA-DQP is a service-based distributed query processing system in the Grid.It is concerned with providing an approach to deliver high level data access and integration services which are needed if data-intensive distributed applications running on heterogeneous platforms are to benefit from the Grid.It provides a uniform virtual data view above multiple relational database in the grid.Grid users can issue their queries based on the virtual view.Firstly,the architecture of OGSA-DQP was described.Then,the internal query and optimization mechanism of OGSA-DQP was analysed.The query performance was evaluated for finding the bottlenecks of query perform-ance and improving the query response time.

关 键 词：分布式查询处理 网格 开放网格服务架构 

分 类 号：TP311.13[自动化与计算机技术—计算机软件与理论]