117 search results - page 6 / 24 » SPARQLing constraints for RDF |
ODBIS
2007
Springer
15 years 3 months ago
2007
Springer
Supporting SPARQL queries over relational databases becomes an active topic recently. However, it has not received enough consideration when SPARQL queries include restrictions on...
ICDE
2012
IEEE
13 years 1 days ago
2012
IEEE
Abstract—This paper revisits the classical problem of multiquery optimization in the context of RDF/SPARQL. We show that the techniques developed for relational and semi-structur...
101
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ESWS
2008
Springer
14 years 11 months ago
2008
Springer
Integrated access to multiple distributed and autonomous RDF data sources is a key challenge for many semantic web applications. As a reaction to this challenge, SPARQL, the W3C Re...
OTM
2007
Springer
15 years 3 months ago
2007
Springer
Lightweight ontologies in the form of RDF vocabularies such as SIOC, FOAF, vCard, etc. are increasingly being used and exported by “serious” applications recently. Such vocabul...
106
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SAC
2009
ACM
15 years 2 months ago
2009
ACM
The Semantic Web and its technologies become increasingly important. As more and more Semantic Web applications are being used, developing more stable Semantic Web applications be...