Sciweavers

1268 search results - page 200 / 254
» On database query languages for K-relations
Sort
View
PODS
2008
ACM
165views Database» more  PODS 2008»
14 years 9 months ago
Data exchange and schema mappings in open and closed worlds
In the study of data exchange one usually assumes an openworld semantics, making it possible to extend instances of target schemas. An alternative closed-world semantics only move...
Leonid Libkin, Cristina Sirangelo
DKE
1998
88views more  DKE 1998»
13 years 8 months ago
Temporal Grid File: A File Structure for Interval Data
Disk I/O is a major bottleneck for query processing in database applications. This bottleneck is especially a problem for temporal databases because of their large size. Reduction...
Chiang Lee, Te-Ming Tseng
CORR
2006
Springer
143views Education» more  CORR 2006»
13 years 9 months ago
A Knowledge-Based Approach for Selecting Information Sources
Through the Internet and the World-Wide Web, a vast number of information sources has become available, which offer information on various subjects by different providers, often i...
Thomas Eiter, Michael Fink, Hans Tompits
DASFAA
2007
IEEE
156views Database» more  DASFAA 2007»
14 years 25 days ago
An Efficient and Scalable Management of Ontology
Abstract. OWL is a recommended language for publishing and sharing ontologies on the Semantic Web. To manage the ontologies, several OWL data management systems have been proposed....
Myung-Jae Park, Jihyun Lee, Chun-Hee Lee, Jiexi Li...
ECEASST
2008
121views more  ECEASST 2008»
13 years 9 months ago
Analyzing Semantic Properties of OCL Operations by Uncovering Interoperational Relationships
The OCL (Object Constraint Language) as part of the UML (Unified Modeling Language) is a rich language with different collection kinds (sets, multi-sets, sequences) and a large var...
Mirco Kuhlmann, Martin Gogolla