Representing Multiple Mappings between Relational and XML Schemas to Support Interoperability

Abstract

Providing interoperability between relational databases and XML databases has been an important research issue. In this paper, we propose a set of mappings to represent the correspondence between the relational schema and the XML schema. Particularly, we consider the case of multiple mappings between value, collection, and structure constructs. Based on the mapping information, relational queries and XML queries could be transformed to each other and information could be therefore shared. We have built a prototype and experimental results validate the proposed approach.