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Adjustable Transaction Isolation in XML Database Management Systems

Michael P. Haustein

Kaiserslautern University of Technology
Dept. of Computer Science (AG DBIS)
P.O. Box 3049, 67653 Kaiserslautern, Germany
e-mail: haustein@informatik.uni-kl.de

Theo Härder

Kaiserslautern University of Technology
Dept. of Computer Science (AG DBIS)
P.O. Box 3049, 67653 Kaiserslautern, Germany
e-mail: haerder@informatik.uni-kl.de

Full paper (PDF version)

Abstract

Processing XML documents in multi-user database management environments requires a suitable storage model of XML data, support of typical XML application programming interfaces, and concurrency control mechanisms tailored to the XML data model. In this paper, we sketch the architecture and interfaces of our prototype native XML database management system which can be connected to any existing relational DBMS and provides for declarative and navigational data access of concurrent running transactions. We describe the fine-grained concurrency control mechanisms implemented in our system and give a first impression of the so achieved benefits for concurrent transaction processing in native XML database management systems.

accepted for 2nd Int. XML Database Symposium (XSym 2004), Toronto, Canada, Aug. 2004.