利用逆规范化实现关系模式向XML模式的语义转换

目前将关系模式转换为XML模式的方法往往不能保留数据库中原有的语义信息,为此对基于语义的关系模式向XML模式转换方法进行研究,提出了利用逆规范化实现基于语义的关系模式到XML模式转换方法.该方法映射关系模式到关系模式图,由关系模式图得到符合连接条件的表集合,根据关系类别在存在关联的关系模式之间建立连接,用一个结构复杂的关系取代几个结构简单的关系,按照不同的数据依赖关系将连接表和非连接表转换为不同结构的XML schema,将所有XML schema整合成一个XML schema.实验表明该方法对于保留语义约束、加强数据耦合可行有效.

Semantic-based Relational Schema to XML Schema Translation through Denormalization

Now most of methods of translating relational schema to XML schema cannot remain intrinsic semantic information of relational database. This paper is based on the research for this problem and presents a semantic based translating algorithm through denormalization.Relational schema are mapped to relational chart.Table sets in accordance with the joining conditions are obtained from the chart.Associated tables are joined according to the classification,and several simple structure relationships are replaced by a complex one.According to the data dependent relationship,an XML schema is created for every joined table and disjoined table.All schemas are integrated into one.Experiments show that the algorithm is valid and efficient for keeping semantic restriction and strengthening coupling.