| 双时态XML查询中now语义失真的研究与扩展 |
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| 引用本文： | 汤娜,陈罗武,刘瑞君,汤庸.双时态XML查询中now语义失真的研究与扩展[J].计算机科学,2008,35(6):233-235. |
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| 作者姓名： | 汤娜 陈罗武 刘瑞君 汤庸 |
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| 作者单位： | 中山大学计算机科学系,广州,510275 |
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| 摘 要： | 本文研究如何有效地查询基于"单属性表示时态信息"的XML文档的时态信息操作,并选择XML功能较为强大的查询语言XQuery进行时态查询扩展.文中先计论如何解决时态数据库中特殊元素now的语义失真的问题,然后对XQuery进行双时态扩展,最后给出扩展后的查询实例.
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| 关 键 词： | XML 时态数据库 时态扩展 XQuery |
Research of Temporal XML and Querying |
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| TANG N,CHEN Luo-wu,LIU Rui-jun,TANG Yong.Research of Temporal XML and Querying[J].Computer Science,2008,35(6):233-235. |
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| Authors: | TANG N CHEN Luo-wu LIU Rui-jun TANG Yong |
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| Affiliation: | TANG N,CHEN Luo-wu,LIU Rui-jun,TANG Yong (Computer Science Department of Sun Yat-sen Universary,Guangzhou China |
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| Abstract: | We will study how to query temporal information in XML documents. The temporal information is expressed in the xml documents through Single Attribute Expression Method . In this paper,we will first discuss how to solve the semantic distortion problem of now ,and then make the XQuery to support the temporal querying in the XML document and show the cases of querying the temporal information in the xml documents. |
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| Keywords: | XML Temporal database Temporal extension XQuery |
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