'Equivalence rules' diaporamas de présentation

Chap 14 Query Optimization

979 views • 96 slides

Chapter 16: Query Optimization

Chapter 16: Query Optimization. Outline. 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. Introduction.

872 views • 84 slides

Chapter 16: Query Optimization

Chapter 16: Query Optimization. Outline. 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. Introduction.

846 views • 84 slides

Chapter 14: Query Optimization

Chapter 14: Query Optimization. Chapter 14: 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

911 views • 69 slides

Chapter 14: Query Optimization

Chapter 14: Query Optimization. Chapter 14: 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

811 views • 69 slides

Chapter 14: Query Optimization

Chapter 14: Query Optimization. Chapter 14: 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

802 views • 69 slides

Chapter 14: Query Optimization

Chapter 14: Query Optimization. Chapter 14: 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

693 views • 69 slides

Chapter 13: Query Optimization

Chapter 13: Query Optimization. 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

665 views • 66 slides

5. Distributed Query Processing

5. Distributed Query Processing. Chapter 7 Overview of Query Processing Chapter 8 Query Decomposition and Data Localization. Outline. Overview of Query Processing ( ???? ) Query Decomposition and Localization ( ??????? ). Query Processing. High level user query. Query

2.47k views • 64 slides

Chapter 14: Query Optimization

Chapter 14: Query Optimization. Chapter 14: 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

787 views • 61 slides

Under the hood: Query Optimization, Query Execution plans

Under the hood: Query Optimization, Query Execution plans. Relational algebra, SQL, and the DBMS?. Optimized Relational algebra expression. Relational algebra expression. Query execution plan. Executable code. SQL. Code generator. parser. Query optimizer. DBMS. Introduction.

915 views • 58 slides

Under the hood: Query Optimization, Query Execution plans

Under the hood: Query Optimization, Query Execution plans. Relational algebra, SQL, and the DBMS?. Optimized Relational algebra expression. Relational algebra expression. Query execution plan. Executable code. SQL. Code generator. parser. Query optimizer. DBMS. Introduction.

730 views • 58 slides

Chapter 13: Query Optimization

Chapter 13: Query Optimization. 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

538 views • 53 slides

Chapter 13: Query Optimization

Chapter 13: Query Optimization. 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

481 views • 48 slides

Query Optimization

Query Optimization. Query Processing. Activities involved in retrieving data from the database. Aims of QP: transform query written in high-level language (e.g. SQL), into correct and efficient execution strategy expressed in low-level language (implementing RA);

671 views • 41 slides

Formal Logic

Formal Logic. Formal Logic Formal Logic The study of systems of deductive argument in which symbols are used to represent precisely defined categories of expressions Formal logic deals with the manipulation of truth values (i.e., arguments). Given one truth we wish to find another truth

875 views • 39 slides

Chapter 13: Query Optimization

Chapter 13: Query Optimization. Data Management for Big Data 2018-2019 (spring semester). Dario Della Monica. These slides are a modified version of the slides provided with the book The original version of the slides is available at : https://www.db-book.com/.

307 views • 30 slides

Equivalence rules

Equivalence rules. Knowledge Representation & Reasoning . Propositional Logic: Equivalence rules .

144 views • 2 slides