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Database Techniek Query Optimization (chapter 14)

Database Techniek Query Optimization (chapter 14). Lecture 3. Query Rewriting Equivalence Rules Query Optimization Dynamic Programming (System R/DB2) Heuristics (Ingres/Postgres) De-correlation of nested queries Result Size Estimation Practicum Assignment 2. Lecture 3. Query Rewriting

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15. Query Optimization

15. Query Optimization. System Design Parsing Examples Modern Optimizers EXPLAIN – the output of an optimizer Overview of internals Dynamic programming VP – view the internals Examples Variants Top Down Optimization Optimizer Hints Unnesting Queries. Learning Objectives.

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