[PDF.31vi] Cardinality Estimation Techniques in Relational Database Systems

Cardinality Estimation Techniques in Relational Database Systems

[PDF.hx83] Cardinality Estimation Techniques in Relational Database Systems

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 | #14487422 in Books |  Yu Xiaohui |  2008-07-03 | Original language:English | PDF # 1 |  8.66 x.30 x5.90l,.45 | File type: PDF | 132 pages

 | Cardinality Estimation Techniques in Relational Database Systems

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||About the Author|Dr. Xiaohui Yu is an assisant professor at the School of Information Technology, York University, Canada. He holds a B.Sc. from Nanjing University, China (1999), a M.Phil. from the Chinese University of Hong Kong (2001), and a Ph.D. from the Uni

Accurate and efficient cardinality estimation is of critical importance to many database operations. In this book, we study three cardinality estimation problems in the contexts of query optimization and data cleaning, and propose a set of new techniques to address the challenges arising therein. We first consider the problem of estimating the number of distinct value combinations for a set of attributes. We propose an estimator that utilizes the knowledge of marginal di...

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