1890 search results - page 128 / 378 » Querying Big Data by Accessing Small Data |
196
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AIMSA
2010
Springer
15 years 8 months ago
2010
Springer
Abstract. Ontology based data access (OBDA) is concerned with providing access to typically very large data sources through a mediating conceptual layer that allows one to improve ...
181
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COMSWARE
2008
IEEE
15 years 8 months ago
2008
IEEE
Abstract-- This paper presents a proposal for group membership and access control services for JXTA, both based on the principle of self-organization and collaboration of peer grou...
188
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WWW
2008
ACM
16 years 7 months ago
2008
ACM
The Semantic Web is based on accessing and reusing RDF data from many different sources, which one may assign different levels of authority and credibility. Existing Semantic Web ...
148
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WAIM
2005
Springer
15 years 12 months ago
2005
Springer
In order to lay a solid foundation for the emerging semantic web, effective and efficient management of large RDF(S) data is in high demand. In this paper we propose an approach t...
309
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ICDE
2007
IEEE
16 years 7 months ago
2007
IEEE
We study the problem of answering queries posed on virtual views of XML documents, a problem commonly encountered when enforcing XML access control and integrating data. We approa...