XML and Relational Database Management Systems: The Inside Story Michael Rys, Donald D. Chamberlin, and Daniela Florescu   View Paper (PDF)   Return to Tutorial 1 Abstract As XML has evolved from a document markup language to a widely-used format for exchange of structured and semistructured data, managing large amounts of XML data has become increasingly important. A number of companies, including both established database vendors and startups, have recently announced new XML database systems or new XML functionality integrated into existing database systems. This tutorial will provide an insight into how XML functionality fits into relational database management systems as seen by three major relational vendors: IBM, Microsoft and Oracle. ©2006 Association for Computing Machinery