摘要
XML已经成为网上数据交互的标准。所有的XML都应遵循两种标准之一:DTD或XML Schema。目前研究的重点是将DTD转换成关系模式,同时在一定程度上保持函数依赖关系。主要使用的方法是内联(inline)法。基于DTD图,将内联作为化简图的一种方法。该方法能够将XML DTD映射成关系模式,同时保证节点拓扑关系不丢失,能在一定程度上保持DTD中的函数依赖关系。
EXtensible Markup Language(XML) has become data exchanging standard of the network.All XML documents must obey to one of two standards: Document Type Definition(DTD) or XML schema.Now the study is focusing on how to map the DTD into relational schemas as well as preserving functional dependencies.The main method is inlining.Simplifying the graph by inlining was based on DTD graph.This method not only gains the goal but also preserves topological relationship of the nodes.It also preserves functional dependencies in original DTD to some extent.
出处
《计算机应用》
CSCD
北大核心
2008年第S2期123-124,128,共3页
journal of Computer Applications
关键词
DTD
图
关系模式
函数依赖
Document Type Definition(DTD)
graph
relational schema
functional dependency
