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» Efficiently Querying Relational Databases Using OWL and SWRL
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SSD
1999
Springer
106views Database» more  SSD 1999»
15 years 1 months ago
XZ-Ordering: A Space-Filling Curve for Objects with Spatial Extension
There is an increasing need to integrate spatial index structures into commercial database management systems. In geographic information systems (GIS), huge amounts of information ...
Christian Böhm, Gerald Klump, Hans-Peter Krie...
WWW
2008
ACM
15 years 10 months ago
Scaling RDF with time
The World Wide Web Consortium's RDF standard primarily consists of (subject,property,object) triples that specify the value that a given subject has for a given property. How...
Andrea Pugliese, Octavian Udrea, V. S. Subrahmania...
77
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SIGMOD
1996
ACM
109views Database» more  SIGMOD 1996»
15 years 1 months ago
Improved Histograms for Selectivity Estimation of Range Predicates
Many commercial database systems maintain histograms to summarize the contents of relations and permit efficient estimation of query result sizes and access plan costs. Although s...
Viswanath Poosala, Yannis E. Ioannidis, Peter J. H...
ICDE
2009
IEEE
285views Database» more  ICDE 2009»
15 years 11 months ago
Design and Evaluation of the iMed Intelligent Medical Search Engine
-- Searching for medical information on the Web is popular and important. However, medical search has its own unique requirements that are poorly handled by existing medical Web se...
Gang Luo
EXPDB
2006
ACM
15 years 3 months ago
Performance Study of Rollout for Multi Dimensional Clustered Tables in DB2
In data warehousing applications, the ability to efficiently delete large chunks of data from a table is very important. This feature is also known as Rollout. Rollout is generall...
Bishwaranjan Bhattacharjee