Extended P-Schema and Its Implementation in Mapping from XML Schema to Relational Schema
扩展P-Schema及其在XML Schema到关系模式映射中的应用*

According to the limitedness of P-Schema in the mapping from XML schema to relational schema,this paper brings forward extended P-Schema and presents a mapping method from XML schema to relational schema based on the extended P-Schema. The method brings forward solutions to some difficult problems such as multi-value mapping,recursion mapping,constraints mapping about key and uniqueness,etc.