Chapter 13:Query Optimization Introduction Transformation of Relational Expressions Catalog Information for Cost Estimation Statistical Information for Cost Estimation Cost-based optimization Dynamic Programming for Choosing Evaluation Plans Materialized views Database System Concepts-6th Edition 1.2 ©Silberschat乜，Korth and SudarshanDatabase System Concepts - 6 1.2 ©Silberschatz, Korth and Sudarshan th Edition Chapter 13: Query Optimization Introduction Transformation of Relational Expressions Catalog Information for Cost Estimation Statistical Information for Cost Estimation Cost-based optimization Dynamic Programming for Choosing Evaluation Plans Materialized views