2223 search results - page 309 / 445 » Query Optimization in an OODBMS |
156
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JIIS
2006
15 years 4 months ago
2006
A join of two relations in real databases is usually much smaller than their cartesian product. This means that most of the combinations of tuples in the crossproduct of the respe...
110
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IJWIN
2007
15 years 4 months ago
2007
— We analyze the asymptotic cost of discovering a route within a flat ad hoc network and we show that one can discover a route with cost that is proportional only to the area of...
133
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CG
2004
Springer
15 years 4 months ago
2004
Springer
Very large polygonal models are frequently used in scientific computing, mechanical engineering, or virtual medicine. An effective technique to handle these large models is occlus...
107
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PVLDB
2008
15 years 3 months ago
2008
Beyond already existing huge data volumes, e-science communities face major challenges in managing the anticipated data deluge of forthcoming projects. Community-driven data grids...
135
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IAT
2010
IEEE
15 years 2 months ago
2010
IEEE
This paper describes the design and implementation of backward chained clustered RDFS reasoning in 4store. The system presented, called "4s-reasoner", adds no overhead t...