6004 search results - page 454 / 1201 » Parallelizing query optimization |
189
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MOBIDE
2010
ACM
15 years 7 months ago
2010
ACM
We propose a distributed algorithm to construct a balanced communication tree that serves in gathering data from the network nodes to a sink. Our algorithm constructs a near-optim...
187
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EOR
2010
15 years 7 months ago
2010
For a finite set of points S, the (monochromatic) Reverse Nearest Neighbor (RNN) rule associates with any query point q the subset of points in S that have q as its nearest neighb...
223
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SIGMOD
2008
ACM
15 years 7 months ago
2008
ACM
The UQBE is a mashup tool for non-programmers that supports query-by-example (QBE) over a schema made up by the user without knowing the schema of the original sources. Based on a...
221
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ICDE
2011
IEEE
14 years 11 months ago
2011
IEEE
— Uncertain data is quite common nowadays in a variety of modern database applications. At the same time, the join operation is one of the most important but expensive operations...
204
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NIS
1998
15 years 6 months ago
1998
The execution time of a large query depends mainly on the memory utilization which should avoid disk accesses for intermediate results. Poor memory management can hurt performance ...