116 search results - page 13 / 24 » Measuring the Complexity of Join Enumeration in Query Optimi... |
ADBIS
1998
Springer
15 years 3 months ago
1998
Springer
In order to answer efficiently range queries in 2-d R-trees, first we sort queries by means of a space filling curve, then we group them together, and finally pass them for process...
194
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ICDE
2007
IEEE
16 years 1 months ago
2007
IEEE
Estimating the selectivity of queries is a crucial problem in database systems. Virtually all database systems rely on the use of selectivity estimates to choose amongst the many ...
188
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ICDE
2006
IEEE
16 years 1 months ago
2006
IEEE
As XQuery nears standardization, more sophisticated XQuery applications are emerging, which often exploit the entire language and are applied to non-trivial XML sources. We propos...
166
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SIGMOD
2006
ACM
15 years 11 months ago
2006
ACM
Data streaming systems are becoming essential for monitoring applications such as financial analysis and network intrusion detection. These systems often have to process many simi...
DOLAP
2000
ACM
15 years 4 months ago
2000
ACM
A multidimensional database can be seen as a collection of multidimensional cubes, from which information is usually extracted by aggregation; aggregated data can be calculated ei...