2514 search results - page 77 / 503 » On the Computation of Approximations of Database Queries |
231
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SIGMOD
2008
ACM
16 years 6 months ago
2008
ACM
We demonstrate our prototype of the DBO database system. DBO is designed to facilitate scalable analytic processing over large data archives. DBO's analytic processing perfor...
206
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ADBIS
2007
Springer
16 years 16 days ago
2007
Springer
ODRA (Object Database for Rapid Application development) is an object-oriented application development environment currently being constructed at the Polish-Japanese Institute of I...
175
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VLDB
2002
ACM
15 years 6 months ago
2002
ACM
Query optimization is a computationally intensive process, especially for complex queries. We present here a tool, called PLASTIC, that can be used by query optimizers to amortize...
163
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EUROPAR
1999
Springer
15 years 10 months ago
1999
Springer
For complex queries in parallel database systems, substantial amounts of data must be redistributed between operators executed on different processing nodes. Frequently, such inter...
280
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ICDE
2001
IEEE
16 years 7 months ago
2001
IEEE
We study the problem of approximately answering aggregation queries using sampling. We observe that uniform sampling performs poorly when the distribution of the aggregated attrib...