Publication

In our community there are three main models for representing and processing data: Relations, XML and RDF. Each of these models has its "sweet spot" for applications and its own query language; very few implementations cater for more than one of these. We describe a uniform platform which provides interfaces for different query languages to retrieve and modify the same information or combine it with other data sources. This paper presents methods for completely and correctly translating SQL and SPARQL into XQuery since XQuery provides the most expressive foundation. Early results with our current prototype show that the translation from SPARQL to XQuery already achieves very competitive performance, whereas there is still a significant performance gap compared to SQL.

@inproceedings{abc,
	abstract = {In our community there are three main models for representing and processing data: Relations, XML and RDF. Each of these models has its "sweet spot" for applications and its own query language; very few implementations cater for more than one of these. We describe a uniform platform which provides interfaces for different query languages to retrieve and modify the same information or combine it with other data sources. This paper presents methods for completely and correctly translating SQL and SPARQL into XQuery since XQuery provides the most expressive foundation. Early results with our current prototype show that the translation from SPARQL to XQuery already achieves very competitive performance, whereas there is still a significant performance gap compared to SQL.},
	author = {Martin Kaufmann and Daniela Florescu and Donald Kossmann and Peter M. Fischer},
	booktitle = {Proceedings of the XML Prague 2011 Conference, Prague, CZ},
	title = {Translating SPARQL and SQL to XQuery},
	year = {2011}
}