'Fourth normal form 4nf' diaporamas de présentation

Introduction to Database Design Methodology

Introduction to Database Design Methodology. Chapter 7 Normalisation. Learning Goals. To learn the techniques of normalisation To improve poor table structures by normalisation up to 3NF. Table of Contents. What is Normalisation? Stages in Normalisation First Normal Form (1NF)

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Normalization

Normalization. Learning Objectives. Definition of normalization and its purpose in database design Types of normal forms 1NF, 2NF, 3NF, BCNF, and 4NF Transformation from lower normal forms to higher normal forms

1.82k views • 52 slides

Functional Dependencies and Normalization

Functional Dependencies and Normalization. Instructor: Mohamed Eltabakh meltabakh@cs.wpi.edu. What to Cover. Functional Dependencies (FDs) Closure of Functional Dependencies Lossy & Lossless Decomposition Normalization. sNumber. sName. pNumber. pName. s1. Dave. p1. MM. s2. Greg.

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Lecture 9: Normalization

Lecture 9: Normalization. May 3, 2015. Chapter 15. Functional Dependencies and Normalization for Relational Databases. Outline Introduction Informal Design Guidelines For Relation Schemas Functional Dependencies Inference Rules for Functional Dependencies Normalization of Relations

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Review: Normalization and data anomalies

Review: Normalization and data anomalies. CSCI 2141 W2013. Slide set modified from courses.ischool.berkeley.edu/i257/f06/.../Lecture06_257.ppt. Housekeeping. Assignment 3 on normalization due by 9:35 am on Friday morning

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Chapter 5 Normalization of Database Tables

Chapter 5 Normalization of Database Tables. Database Systems: Design, Implementation, and Management 4th Edition Peter Rob & Carlos Coronel. Database Tables and Normalization.

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Chapter 5 Normalization of Database Tables

Chapter 5 Normalization of Database Tables. Database Systems: Design, Implementation, and Management 4th Edition Peter Rob & Carlos Coronel. Database Tables and Normalization.

372 views • 35 slides

Revisit FDs & BCNF Normalization

Revisit FDs & BCNF Normalization. Instructor: Mohamed Eltabakh meltabakh@cs.wpi.edu. Announcements. Project Phase 2 is due Now !!! Project Phase 3 will be out today (Nov. 11) and due on Nov. 22 (8:00am) Project feedback !!! Keep in mind the midterm exam is on Nov. 22. FDs and Normalization.

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Database Design & normalization

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Rules of Database Normalization

Rules of Database Normalization. Overview. What is Normalization ? What is the objective of Normalization ? Why is Normalization in a database important? What are NORMAL FORMS ? How do we accomplish Normalization in our database? Are there times when Normalization is unnecessary?.

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RELATIONAL TABLE NORMALIZATION

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Functional Dependencies and Normalization

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Normalization

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Designing a database

Designing a database. Normalization. Normalization theory is based on the observation that relations with certain properties are more effective in inserting, updating and deleting data than other sets of relations containing the same data

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An Introduction to Database Normalization

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Database Management Fall 2003 Normalization Chapter 8

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Normalization of Database Tables

Normalization of Database Tables. Topics. Role of normalization in the database design process Normal forms 1NF, 2NF, 3NF, BCNF, 4NF Normalization & ER modeling used together for good database design Denormalization. Normalization.

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Database Design Issues, Part I

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Lecture 18 of 42

Lecture 18 of 42. More Normal Forms Notes: JSP, MP4; Applications of Normalization. Monday, 13 October 2008 William H. Hsu Department of Computing and Information Sciences, KSU KSOL course page: http://snipurl.com/va60 Course web site: http://www.kddresearch.org/Courses/Fall-2008/CIS560

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