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Chapter 14 Query Optimization

Chapter 14 Query Optimization

Chapter 14 Query Optimization. Chapter 14: Query Optimization. Introduction Statistical (Catalog) Information for Cost Estimation Estimation of Statistics Cost-based optimization Revisiting Selection Algorithms Transformation of Relational Expressions and Equivalence rules

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1.04k views • 82 slides
Chapter 12: Query Processing

Chapter 12: Query Processing

Chapter 12: Query Processing. Overview Catalog Information for Cost Estimation Measures of Query Cost Selection Operation Sorting Join Operation Other Operations Evaluation of Expressions Transformation of Relational Expressions Choice of Evaluation Plans.

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915 views • 75 slides
Chapter 12: Query Processing

Chapter 12: Query Processing

Chapter 12: Query Processing. Overview Catalog Information for Cost Estimation Measures of Query Cost Selection Operation Sorting Join Operation Other Operations Evaluation of Expressions Transformation of Relational Expressions Choice of Evaluation Plans.

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758 views • 75 slides
Chapter 13

Chapter 13

Chapter 13. CS 157 B Presentation -- Query Processing (origional from Silberschatz, Korth and Sudarshan) Presented By Laptak Lee. Introduction.

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797 views • 72 slides
Chapter 13: Query Processing

Chapter 13: Query Processing

Chapter 13: Query Processing. Chapter 13: Query Processing. Overview Measures of Query Cost Selection Operation Sorting Join Operation Other Operations Evaluation of Expressions. Basic Steps in Query Processing. 1. Parsing and translation 2. Optimization 3. Evaluation.

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585 views • 58 slides
Chapter 13: Query Processing

Chapter 13: Query Processing

Chapter 13: Query Processing. Chapter 13: Query Processing. Overview Measures of Query Cost Selection Operation Sorting Join Operation Other Operations Evaluation of Expressions. Basic Steps in Query Processing. 1. Parsing and translation 2. Optimization 3. Evaluation.

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544 views • 54 slides
Schedule

Schedule

Schedule. Today: Query Processing overview. Steps in Query Processing. 1. Parsing and translation 2. Optimization 3. Evaluation. Steps in Query Processing. Parsing and translation translate the query into its internal form. This is then translated into relational algebra.

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495 views • 29 slides

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