'Index selection' diaporamas de présentation

Carnegie Mellon Univ. Dept. of Computer Science 15-415/615 - DB Applications

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Physical Database Design

Physical Database Design. Section 12.3.3 + Chapter 20. Overview. After ER design, schema refinement, and the definition of views, we have the conceptual and external schemas for our database.

488 views • 30 slides

Self-tuning DB Technology & Info Services: from Wishful Thinking to Viable Engineering

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Physical Database Design and Tuning

Physical Database Design and Tuning. Chapter 20. Overview. After ER design, schema refinement, and the definition of views, we have the conceptual and external schemas for our database.

413 views • 25 slides

Primitives for Workload Summarization and Implications for SQL

Primitives for Workload Summarization and Implications for SQL. Prasanna Ganesan* Stanford University Surajit Chaudhuri Vivek Narasayya Microsoft Research *Work done at Microsoft Research. Motivation. Workload: Set of SQL Statements Many tasks exploit workload information

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Physical Database Design and Tuning

Physical Database Design and Tuning. Although the whole of this life were said to be nothing but a dream and the physical world nothing but a phantasm, I should call this dream or phantasm real enough, if, using reason well, we were never deceived by it. Baron Gottfried Wilhelm von Leibniz.

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A few Simple Applications of Index Selection Theory

A few Simple Applications of Index Selection Theory. Focus is on using multiple sources ff information to improve a single trait. In this case, the vector of weights has a simple form and Ga simplifies to the the vector g 1 of genetic covariances of all traits with trait 1.

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PBG 650 Advanced Plant Breeding

PBG 650 Advanced Plant Breeding. Module 11: Multiple Traits Genetic Correlations Index Selection. Genetic correlations. Correlations in phenotype may be due to genetic or environmental causes May be positive or negative Genetic causes may be due to pleiotropy linkage

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Automatic Index Selection for Shifting Workloads

Automatic Index Selection for Shifting Workloads. Karl Schnaitter and Neoklis Polyzotis (UC Santa Cruz) Serge Abiteboul (INRIA and University of Paris 11) Tova Milo (University of Tel Aviv). On-line Index Selection. A heavily used database needs indexes

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Instructor: Chen Li

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CS222: Principles of Data Management Notes #09 Indexing Performance

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Physical Database Design

Physical Database Design. About 30% of Chapter 20. Overview. After ER design, schema refinement, and the definition of views, we have the conceptual and external schemas for our database.

211 views • 17 slides