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Computer Engineering ›› 2006, Vol. 32 ›› Issue (3): 99-101.

• Software Technology and Database • Previous Articles     Next Articles

Design of Graphical Interface Based on Multidatabase Query Optimization

WU Mingxia, CHEN Qi, HUANG Qichun   

  1. Intelligent Software Laboratory, Department of Computer Science, Zhejiang University, Hangzhou 310027
  • Online:2006-02-05 Published:2006-02-05

基于多数据库查询优化的图形工具的设计

吴明霞,陈 奇,黄启春   

  1. 浙江大学计算机系智能软件实验室,杭州 310027

Abstract: The paper proposes a graphical user tool to multidatabase. It supplies a layer which can map the subqueries to the respective database to access the multidatabase and realizes the algorithm of multidatabase query optimization. The user can define their query in an intuitive way.

Key words: Graphical user interface; Multidatabase query optimization; Cost model; Query specification

摘要: 设计了一个定义多库查询的工具,该工具的设计提供了一个新的抽象层面,该抽象层面向下可将查询映射到各种具体的数据库中,向上则隐藏了各个数据库的差异,在前端采用统一的方式显示给用户。用户可以以一种直观的方式定义查询,并且在查询执行过程中使用了查询采样优化算法,使得整个用户查询变得简单而快捷。

关键词: 图形界面;多数据库查询优化;代价模型;查询描述