2724 search results - page 393 / 545 » Optimizing Queries on Files |
121
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JGTOOLS
2008
15 years 3 months ago
2008
Hierarchical spatial data structures provide a means for organizing data for efficient processing. Most spatial data structures are optimized for performing queries, such as inters...
139
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DKE
2007
15 years 3 months ago
2007
Histogram techniques have been used in many commercial database management systems to estimate a query result size. Recently, it has been shown that they are very effective to su...
146
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JIIS
2006
15 years 3 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...
104
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IJWIN
2007
15 years 3 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...
126
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CG
2004
Springer
15 years 3 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...