| 一种查询XML异构数据源的新方法 |
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| 引用本文： | 陈金辉,董飚,孙亚民. 一种查询XML异构数据源的新方法[J]. 计算机科学, 2008, 35(6): 230-232 |
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| 作者姓名： | 陈金辉 董飚 孙亚民 |
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| 作者单位： | 1. 南京信息工程大学信息与控制学院,南京,210044
2. 南京理工大学计算机科学与技术学院,南京,210094 |
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| 基金项目： | 南京信息工程大学校科研和教改项目 |
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| 摘 要： | 由于异构数据源存在结构差异和结构不兼容等问题,在其上进行查询是一个挑战.本文根据XML树的特点,对其进行了外延,设计了一种新的XML树的查询方法.通过样式图获得XML树的结点间的语义关系,查询条件可以表示为XML样式图模式,查询不被限定于特定的XML树,给出了基于样式图模式的查询算法.用例说明了该方法如何应用于异构数据源的查询.
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| 关 键 词： | XML树 样式图 样式图模式 |
A Novel Approach to Query Heterogenous Data Sources Based on XML |
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| CHEN Jin-hui,DONG Biao,SUN Ya-min. A Novel Approach to Query Heterogenous Data Sources Based on XML[J]. Computer Science, 2008, 35(6): 230-232 |
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| Authors: | CHEN Jin-hui DONG Biao SUN Ya-min |
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| Affiliation: | CHEN Jin-hui1 DONG Biao2 SUN Ya-min2(School of Information & Control,Nanjing University of Information Science & Technology,Nanjing 210044,China)1(School of Computer Science & Technology,Nanjing University of Science & Technology,Nanjing 210094,China)2 |
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| Abstract: | Querying heterogenous sources is a challenging issue due to structural differences and structural inconsistencies. Based on the characteristics of XML and several extensions on the XML tree,a novel querying approach is proposed for XML trees. A semantic relationship between nodes in XML trees is captured by the concept of a schema graph. Queries are specified on the schema graph patterns of the schema graph. A query is not restricted by the structure of a specific XML tree. A technique for evaluating querie... |
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| Keywords: | XML tree Schema graph Schema graph pattern |
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