journal6 ›› 2007, Vol. 28 ›› Issue (4): 46-49.
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国家自然科学基金资助项目(60173041)
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摘要：从数据库角度分析了XML文档中存在的间接函数依赖、传递函数依赖、多值依赖，阐述了间接函数依赖和传递函数依赖规范化所对应的第1范式、第2范式及多值依赖规范化所对应的第3范式，提出了4个文档规范化规则，这些规则分别消除了间接函数依赖、传递函数依赖、多值依赖，同时从文档规范化的性能因素方面探讨了反规范化的有用性.
关键词： XML, 数据库, 函数依赖, 规范化, 反规范化
Abstract: On view of database,the article analyzes the indirect functional dependency，transitive functional dependency and MVD in XML,elaborates the XNF-1,XNF-2 and XNF-3,which are corresponded by the normalization of the indirect functional dependency,transitive functional dependency and MVD respectively,and puts forward four principles of file normalization.Taking the property elements into consideration,the article also probes into the feasibility of anti-normalization.
Key words: XML, database, functional dependency, normalization, anti-normalization
黄海燕. XML文档规范化和反规范化[J]. journal6, 2007, 28(4): 46-49.
HUANG Hai-Yan. XML Documents of Normalization and Anti-Normalization[J]. journal6, 2007, 28(4): 46-49.
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https://zkxb.jsu.edu.cn/CN/Y2007/V28/I4/46
