Implementing XQuery 1.0: The Galax experience

Maria Francesca Fernández, Jérôme Siméon, Byron Choi, Amélie Marian, Gargi Sur

Research output: Chapter in book/report/conference proceedingConference proceedingpeer-review

48 Citations (Scopus)


Galax is a light-weight, portable, open-source implementation of XQuery 1.0. Started in December 2000 as a small prototype designed to test the XQuery static type system, Galax has now become a solid implementation, aiming at full conformance with the family of XQuery 1.0 specifications. Because of its completeness and open architecture, Galax also turns out to be a very convenient platform for researchers interested in experimenting with XQuery optimization.

We demonstrate the Galax system as well as its most advanced features, including support for XPath 2.0, XML Schema and static type-checking. We also present some of our first experiments with optimization. Notably, we demonstrate query rewriting capabilities in the Galax compiler, and the ability to run queries on documents up to a Gigabyte without the need for preindexing. Although early versions of Galax have been shown in industrial conferences over the last two years, this is the first time it is demonstrated in the database community.
Original languageEnglish
Title of host publicationVLDB '03: Proceedings of the 29th international conference on Very large data bases
PublisherAssociation for Computing Machinery (ACM)
Number of pages4
Publication statusPublished - 9 Sept 2003
Event29th International Conference on Very Large Data Bases, VLDB 2003 - Berlin, Germany
Duration: 9 Sept 200312 Sept 2003


Conference29th International Conference on Very Large Data Bases, VLDB 2003
Internet address


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