620 search results - page 37 / 124 » Algorithms for Rewriting Aggregate Queries Using Views |
203
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SIGMOD
2007
ACM
16 years 3 months ago
2007
ACM
Accurate cardinality estimation is critically important to high-quality query optimization. It is well known that conventional cardinality estimation based on histograms or simila...
122
Voted
WEBDB
2009
Springer
15 years 10 months ago
2009
Springer
The question whether a given set of views, defined by queries, can be used to answer another query, arises in several contexts such as query optimization, data integration and se...
132
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SIGMOD
2010
ACM
15 years 8 months ago
2010
ACM
We propose PASTE, the first differentially private aggregation algorithms for distributed time-series data that offer good practical utility without any trusted server. PASTE add...
153
Voted
ADC
2008
Springer
15 years 5 months ago
2008
Springer
Many existing access controls use node filtering or querying rewriting techniques. These techniques require rather time-consuming processes such as parsing, labeling, pruning and/...
137
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RAID
2001
Springer
15 years 8 months ago
2001
Springer
Abstract. This paper describes an aggregation and correlation algorithm used in the design and implementation of an intrusion-detection console built on top of the Tivoli Enterpris...