Chapter 6: Query Decomposition and Data Localization
Chapter 6: Query Decomposition and Data Localization
Chapter 6: Query Decomposition and Data Localization
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<strong>Query</strong> <strong>Decomposition</strong> – Rewriting . . .<br />
• Example (contd.): Another equivalent query tree, which allows a more efficient query<br />
evaluation, since the most selective operations are applied first.<br />
DDB 2008/09 J. Gamper Page 14
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