| 摘要: |
| POLYBASE系统是一个集成的多数据库系统．本文主要讨论了POLYBASE系统的体系结构、集成数据模型，提出了一个基于加权查询树的查询表示模型，设计并实现了基于加权查询树查询表示模型的一个有效的导航查询处理算法． |
| 关键词: 多数据库系统，集成数据模型，加权查询树，查询处理． |
| DOI： |
| 分类号: |
| 基金项目:本文研究得到国家86高科技项目基金资助. |
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| QUERY PROCESSING TECHNIQUES IN THE POLYBASE SYSTEM |
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Wang Guoren,Yu Ge,Shan Jidi,Zheng Huaiyuan
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| Abstract: |
| POLYBASE is an integrated multi database system．This paper mainly dis-cusses the architecture and integration data model of the POLYBASE system，presents a query presentation model based on the concept of weighted query trees，designs and imple-ments an effective navigative query processing algorithm on the basis of the concept of weighted trees． |
| Key words: Multi database systems,integration data models,weighted query trees,query processing． |
