3891 search results - page 512 / 779 » Query Models |
176
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DAWAK
2005
Springer
16 years 6 days ago
2005
Springer
The queries defined on data warehouses are complex and use several join operations that induce an expensive computational cost. This cost becomes even more prohibitive when querie...
193
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SAC
2003
ACM
15 years 12 months ago
2003
ACM
Based on the limitations raised by existing approaches in the context of the Semantic Web, we propose a formalism, Web Sources Global Ontology (WebSOGO), a data meta-model for the...
154
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VLDB
2001
ACM
15 years 11 months ago
2001
ACM
Relational database systems have traditionally optimzed for I/O performance and organized records sequentially on disk pages using the N-ary Storage Model (NSM) (a.k.a., slotted p...
170
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IPPS
2000
IEEE
15 years 11 months ago
2000
IEEE
This paper presents an efficient parallel information retrieval (IR) system which provides fast information service for the Internet users on lowcost high-performance PC-NOW enviro...
207
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VLDB
1998
ACM
15 years 11 months ago
1998
ACM
We propose a multi-dimensional language called nD-SQL with the following features: (i) nD-SQL supports queries that interoperate amongst multiple relational sources with heterogen...