Institute for Informatics
Georg-August-Universität Göttingen

Databases and Information Systems

Uni Göttingen

10th. Intl. Conference on Extending Database Technology (EDBT'06),
Munich, Germany, March 26-29, 2006. LNCS 3896, Springer, pp. 792-810.

Handling Interlinked XML Instances on the Web

Erik Behrends, Oliver Fritzen, Wolfgang May


XML instances are not necessarily self-contained but may have links to remote XML data residing on other servers. Links between (autonomous) XML instances can be expressed by the XLink language; although, querying such interlinked sources is not yet actually supported.

We describe a model of such linked XML instances where the links are not seen as explicit links (where the users must be aware of the links and traverse them explicitly in their queries), but where the links define views that combine into a logical, transparent (XML) model that then can be queried by XPath/XQuery. We motivate the underlying modeling and give a concise and declarative specification as an XML-to-XML mapping. We also describe the implementation of the model as an extension of the "eXist" XML database system and point out some perspectives and combinations with related research aspects.

[Slides (pdf)]

This research is supported by the German Research Foundation (DFG) under grant no. MA 2539.