XML概念层规范化方法及其应用

Normalization Methods and Application of XML Conception Level

一般关系数据库的设计在概念建模时就运用规范化方法,然后是逻辑设计。而现有的XML的规范化理论大都从已有XML模式和实例文档开始分析,再对其进行规范化。这样的XML规范化理论不容易理解也很难应用于实际。本文提出将XML规范化理论应用于XML概念层,介绍了几种概念层的规范化方法。最后结合一个实例说明了XML规范化方法的应用。

In the relational database design, conceptual models are designed firstly, then normalized, and transformed into logical models at last. In contrast, the normalization theory of XML mostly begins to analyze logical schemas and instance documents of XML, and then normalizes the schemas. At the same time the normalization theory is so difficult that it is hardly applied to practice. So we show the process of XML normalization in XML conceptual model in the paper. And several normalization methods are introduc...