expressive query languages

44

DLOG
2006

184views Automated Reasoning» more DLOG 2006»

Data Complexity of Answering Unions of Conjunctive Queries in SHIQ

14 years 26 days ago

Download sunsite.informatik.rwth-aachen.de

The novel context of accessing and querying large data repositories through ontologies that are formalized in terms of expressive DLs requires on the one hand to consider query an...

Magdalena Ortiz, Diego Calvanese, Thomas Eiter

claim paper

Read More »

37

click to vote

PODS
2010
ACM

159views Database» more PODS 2010»

On probabilistic fixpoint and Markov chain query languages

14 years 1 months ago

Download www.cs.cornell.edu

We study highly expressive query languages such as datalog, fixpoint, and while-languages on probabilistic databases. We generalize these languages such that computation steps (e....

Daniel Deutch, Christoph Koch, Tova Milo

claim paper

Read More »

93

click to vote

ICDE
2008
IEEE

166views Database» more ICDE 2008»

A Clustered Index Approach to Distributed XPath Processing

15 years 25 days ago

Download aeolus.ceid.upatras.gr

Supporting top-k queries over distributed collections of schemaless XML data poses two challenges. While XML supports expressive query languages such as XPath and XQuery, these la...

Georgia Koloniari, Evaggelia Pitoura

claim paper

Read More »

Sciweavers

Explore & Download

Productivity Tools

Document Tools

Image Tools

Sciweavers