27 search results - page 4 / 6 » A Black-Box Approach to Query Cardinality Estimation |
SIGMOD
2002
ACM
15 years 9 months ago
2002
ACM
Relational query optimizers have traditionally relied upon table cardinalities when estimating the cost of the query plans they consider. While this approach has been and continue...
157
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ICDE
2006
IEEE
15 years 11 months ago
2006
IEEE
Database columns are often correlated, so that cardinality estimates computed by assuming independence often lead to a poor choice of query plan by the optimizer. Multidimensional...
65
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PVLDB
2008
14 years 9 months ago
2008
Past work has suggested that query execution feedback can be useful in improving the quality of plans by correcting cardinality estimation errors in the query optimizer. The state...
DAWAK
2008
Springer
14 years 11 months ago
2008
Springer
Recently several database-based applications have emerged that are remote from data sources and need accurate histograms for query cardinality estimation. Traditional approaches fo...
101
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EDBT
2006
ACM
15 years 9 months ago
2006
ACM
Abstract. We consider a collaboration of peers autonomously crawling the Web. A pivotal issue when designing a peer-to-peer (P2P) Web search engine in this environment is query rou...