| XML文档的约束及其应用探讨 |
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| 引用本文： | 张健. XML文档的约束及其应用探讨[J]. 现代图书情报技术, 2005, 21(5): 23-26 |
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| 作者姓名： | 张健 |
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| 作者单位： | 长沙理工大学图书馆,长沙,410076 |
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| 摘 要： | 在XML文档中应用约束机制，可以保证其数据的规范性、一致性和有效性。文章讨论了两类XML约束，一类是基于XML模式语言XSD或文档类型定义DTD的基本约束，另一类是自定义约束——XML函数依赖，描述了这两类约束及约束验证方式。在探讨XML约束机制的同时，结合图书馆具体业务，给出并分析了几个XML约束和XML文档的实例。
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| 关 键 词： | XML XSD DTD 约束 |
| 收稿时间： | 2004-12-08 |
| 修稿时间： | 2004-12-08 |
Discuss on XML Constrains and Their Applications |
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| Zhang Jian. Discuss on XML Constrains and Their Applications[J]. New Technology of Library and Information Service, 2005, 21(5): 23-26 |
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| Authors: | Zhang Jian |
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| Affiliation: | (Library of Changsha University of Science and Technology, Changsha 410076，China) |
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| Abstract: | The normalization, consistency and validity of XML document can be ensured when using restrictions. This paper discusses two kinds of restriction, one is an essential restriction based on XSD or DTD, the other is a self-defined restriction, XML function dependency, and also describes these two kinds of restriction and their validating methods. At the same time, this paper gives some examples about XML restriction and XML document in library operation. |
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| Keywords: | XML XSD DTD Constrain |
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