XML Schema数据到对象关系数据的转换——一种基于DOM-Chart模型的映射算法

讨论了基于模式驱动的XML Schema到对象-关系数据库模式映射,并给出了基本的映射规则和映射算法。在映射算法的设计中,先对DOM tree模型作适当修改并重新定义一种新的数据模型即DOM-Chart模型,使用新定义的这种模型简化了映射的处理过程。使用完全支持SQL:1999标准并具备面向对象特征的DBMS Oracle9i Release 2作为后台数据库,采用JDOM作为XML文档的编程接口,使用JAVA语言对论文中描述的算法进行了验证。实验结果表明该算法简单有效,由该映射得到的对象-关系模式保留了XML Schema的语义信息和结构信息,同时也引入了面向对象的数据类型和特征。

Converting XML Schema Data to Object-relational Data A new mapping approach based on DOM-chart model

This paper discussed a new mapping method from XML Schema to the object-relational database,its basic mapping rules and an approach based on DOM-chart model in details.The new DOM-chart model is defined according to the modification of the DOM Tree model.The primary mapping algorithm is simplified according to the new DOM-chart model.The experiment uses DBMS Oracle9i Release 2 database which supports SQL:1999 standard and object-oriented characteristics.It uses JAVA to implement the concrete algorithm.The experiment result shows that the theory and the design are feasible and effective,and that the mapping process preserves the structure as well as the semantic constraints of the source schema in the target schema.