Research on Heterogeneous Data Integration Query Processing

MAO Jia-fei; YE Xia; LI Jun-shan

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Research on Heterogeneous Data Integration Query Processing

更新时间：2026-09-04

- Research on Heterogeneous Data Integration Query Processing
- Vol. 35, Issue 5, Pages: 45-50(2018)
- 作者机构：
  
  火箭军工程大学机构信息工程系,陕西,西安,710025
- 作者简介：
- 基金信息：
- DOI：
  CLC：
- Published：2018
- 稿件说明：
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毛佳飞, 叶霞, 李俊山. 异构数据集成查询处理研究[J]. 微电子学与计算机, 2018, 35(5): 45-50.

MAO Jia-fei, YE Xia, LI Jun-shan. Research on Heterogeneous Data Integration Query Processing[J]. 2018, 35(5): 45-50.
毛佳飞, 叶霞, 李俊山. 异构数据集成查询处理研究[J]. 微电子学与计算机, 2018, 35(5): 45-50. DOI：

MAO Jia-fei, YE Xia, LI Jun-shan. Research on Heterogeneous Data Integration Query Processing[J]. 2018, 35(5): 45-50. DOI：

摘要

对集成系统的查询分解和查询优化进行了深入的研究.在查询分解方面设计了依据全局元数据字典的分解算法

并以实例证明了算法的准确性.在查询优化方面提出了基于XML Schema的查询优化算法

该方法可以有效处理路径表达式中“//”和“*”情况

充分利用局部数据源XML Schema信息减小了查询节点范围

减少了连接操作次数

提高了集成系统的查询效率.

Abstract

In the aspect of query decomposition

a decomposition algorithm based on global metadata dictionary was designed

and the accuracy of the algorithm was proved by an example.In the query optimization

an query optimization algorithm based on XML Schema was proposed.This method could effectively deal with the//and*cases in the path expression

and maked full use of the local data source XML Schema information to reduce the query node range

decreased the times of connection operation and improved the query efficiency of integration system.

关键词

Keywords

references

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