摘要： 虽然新一代的数据库技术如对象数据库、XML数据库等已经开始迅速发展,但这些新技术在现阶段仍然很不成熟,因而目前对Java复杂对象以及XML数据的普遍处理办法是将其转换成关系格式以便利用目前成熟的关系数据库技术进行存储和查询。该文介绍了如何实现XML模式(DTD)到关系数据库范式的映射,由该映射得到的关系模式必须保持XML DTD的语义信息,同时是满足某种规范化约束的关系范式。

关键词: XML DTD, 约束保持, XML键, 传播, 函数依赖, 最小覆盖, 关系范式

Abstract: Although the new database techniques such as object database, XML database have been developed by leaps and bounds, these new techniques at present stage are still quite immature. This paper introduces the procedure of mapping a XML DTD to a relation normal form. This mapping must capture the semantic constraints hidden in the given XML DTD.

中图分类号: 

• TP311.13