9611 search results - page 1729 / 1923 » A Note on Difference Sets |
220
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PODS
2002
ACM
16 years 6 months ago
2002
ACM
We consider the fundamental operation of applying a conjunction of selection conditions to a set of records. With large main memories available cheaply, systems may choose to keep...
163
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PODS
2006
ACM
16 years 6 months ago
2006
ACM
A schema mapping is a specification that describes how data structured under one schema (the source schema) is to be transformed into data structured under a different schema (the...
221
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PODS
2007
ACM
16 years 6 months ago
2007
ACM
IP packet streams consist of multiple interleaving IP flows. Statistical summaries of these streams, collected for different measurement periods, are used for characterization of ...
170
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EDBT
2004
ACM
16 years 6 months ago
2004
ACM
To effectively support today's global economy, database systems need to store and manipulate text data in multiple languages simultaneously. Current database systems do suppor...
179
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EDBT
2006
ACM
16 years 6 months ago
2006
ACM
Current methods for selectivity estimation fall into two broad categories, synopsis-based and sampling-based. Synopsis-based methods, such as histograms, incur minimal overhead at ...