'Selection operations' diaporamas de présentation

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

The MonetDB Architecture

The MonetDB Architecture. Martin Kersten CWI Amsterdam. Try to keep things simple. Database Structures. Execution Paradigm. Query optimizer. DBMS Architecture. MonetDB quickstep. End-user application. XQuery. SQL. PHP. JDBC. ODBC. Python. Perl. RoR. C-mapi lib. MAPI protocol.

779 views • 63 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

CS 319: Theory of Databases: C5

CS 319: Theory of Databases: C5. Dr. Alexandra I. Cristea http://www.dcs.warwick.ac.uk/~acristea/. Query Optimization. Query Optimization. Introduction Transformation of Relational Expressions Catalog Information for Cost Estimation Statistical Information for Cost Estimation

589 views • 44 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

Genetic Programming

336 views • 24 slides

PSAMP Framework Document draft-ietf-psamp-framework-06.txt

PSAMP Framework Document draft-ietf-psamp-framework-06.txt. Duffield, Greenberg, Grossglauser, Rexford: AT&T Chiou: Avici Claise, Marimuthu, Sadasivan: Cisco. Summary. Changes to document since previous version Additional changes required Open issues Status of last call.

134 views • 13 slides