XViews: XML views of relational schemas

The Mediation of Information using XML (MIX) project is a joint effort between the the San Diego Supercomputer Center (SDSC) and the Database Lab at the University of California, San Diego where we are investigating the use of XML as the medium for information modeling and information interchange among heterogeneous information sources. Relational databases represent an important type of information source. We discuss issues in providing XML document views of relational schemas. We refer to these as, XViews. We also discuss related work from a project funded by DARPA and the US Patent and Trademark Office where we investigated issues in mapping SGML document type definitions to relational schemas. The work described here reflects initial results from the above mentioned projects.