| 一种分布式数据库查询优化算法 |
| |
| 引用本文： | 刘超慧,安建成,刘敏.一种分布式数据库查询优化算法[J].许昌师专学报,2008(2):63-66. |
| |
| 作者姓名： | 刘超慧 安建成 刘敏 |
| |
| 作者单位： | k原理工大学计算机与软件学院,山西太原030024 |
| |
| 摘 要： | 在分析分布式数据库查询目标和策略的基础上，提出了一种新的查询优化算法：基于二级索引的查询算法。该算法利用全局和局部二级索引对查询语句进行分析，进而确定最优查询路径。该算法可以有效地减少分布式数据库系统查询过程对带宽的消耗。
|
| 关 键 词： | 分布式数据库 查询优化 二级索引 主站点 |
A New Query Optimal Method in Distributed Database System |
| |
| LIU Chao-hui,AN Jian-cheng,LIU Min.A New Query Optimal Method in Distributed Database System[J].Journal of Xuchang Teachers College(Social Science Edition),2008(2):63-66. |
| |
| Authors: | LIU Chao-hui AN Jian-cheng LIU Min |
| |
| Institution: | ( College of Computer and Software, Taiyuan University of Technology, Taiyuan 030024, China) |
| |
| Abstract: | Distributed query process is difficult and complicated because of the physical distribution and redundancy of data. This article introduces the objective and some optimized query methods, and presents a new query algorithm： distributed inquiry process on the basis of two level-indexing, which can gain the best query path through the global indexing and local indexing and reduces wasted bandwidth in querying of distributed data- base system. |
| |
| Keywords: | distributed database query optimization two-level indexing main site |
| 本文献已被 维普 等数据库收录！ |
