'Second normal form' diaporamas de présentation

The Relational Database Model

The Relational Database Model. CST272. Return. Creating the Unnormalized Table. List the fields Select a primary key The field (or concatenation of two or more fields) that uniquely identifies each record. Purchase Order Report. Unnormalized Table.

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Normalisation

Normalisation. Lecture 3 (Part 2) Akhtar Ali. Learning Objectives. To consider the process of Normalisation To consider the definition and application of 1NF To consider the definition and application of 2NF To consider the definition and application of 3NF. NORMALISATION PRINCIPLES.

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Unit 2 Introduction to Database

Unit 2 Introduction to Database. Dr. Magdi AMER. Intro. Many programs need to save information on disk. The role of DB system is to provide a layer of abstraction between the program and the database (Save, read, update, delete).

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System Analysis and Design

System Analysis and Design. Logical Database Design. Logical and Physical View of Data. Users see the data in different ways (different users have different views of data) These view are examined by the systems analyst, and an overall logical model of the database needs to be developed.

1.01k views • 45 slides

Concepts of Database Management Seventh Edition

Concepts of Database Management Seventh Edition. Chapter 5 Database Design 1: Normalization. Objectives. Discuss functional dependence and primary keys Define first normal form, second normal form, and fourth normal form

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Database Normalization

Database Normalization. CP3410 Daryle Niedermayer, I.S.P., PMP. What is Normalization. Normalization allows us to organize data so that it: Allows faster access (dependencies make sense) Reduced space (less redundancy). Normal Forms.

629 views • 39 slides

Normalization of Database

Normalization of Database. Yong Choi School of Business CSUB. Study Objectives. Understand what normalization is and what role it plays in database design Learn about the normal forms 1NF, 2NF, 3NF, BCNF, and 4NF

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Database Design &Implementation

Database Design &Implementation First priority of database management: Never lose the content of an operational database. This ability to automatically preserve data off-line is called persistence .

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ITS232 Introduction To Database Management Systems

ITS232 Introduction To Database Management Systems . Siti Nurbaya Ismail Faculty of Computer Science & Mathematics, Universiti Teknologi MARA ( UiTM ), Kedah | sitinurbaya@kedah.uitm.edu.my | http://www.sitinur151.wordpress.com | | A2-3039 | ext:2561 | 012-7760562 |. CHAPTER 5

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Normalisation Introduction

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Agenda and Objectives

Agenda and Objectives. Agenda Examine normalized and non-normalized ERDs/Tables Objectives Given an ERD, you will be able to determine whether or not it is in 3NF. Given a non-normalized ERD (or database table), you will be able to revise it to make it 3NF compliant. Resource

468 views • 26 slides

Normalisation

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Normal Forms

Normal Forms. By Christopher Archibald October 16 th 2007. Overview. Database Normalization 1 st Normal Form 2 nd Normal Form 3 rd Normal Form Boyce- Codd Normal Form (BCNF) Lossless-Join. Normalization. Normalization is a technique for designing relational table to:

695 views • 23 slides

Normal Forms

Normal Forms. By Christopher Archibald October 16 th 2007. Overview. Database Normalization 1 st Normal Form 2 nd Normal Form 3 rd Normal Form Boyce- Codd Normal Form (BCNF) Lossless-Join. Normalization. Normalization is a technique for designing relational table to:

416 views • 23 slides

Normalization of Database Tables

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

643 views • 22 slides

LOGICAL DATABASE DESIGN

LOGICAL DATABASE DESIGN. Starting Point --> Local Conceptual Models Database design methodology: conceptual, logical and physical database design. Logical database Design:

747 views • 21 slides

Chapter 5

Normalization of Database Tables Database Systems: Design, Implementation, and Management, Seventh Edition, Rob and Coronel. Chapter 5. Database Tables and Normalization.

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Table Design

Table Design. Quality checking table design: Design Guidelines Normalisation. Is this OK?. Design of Relational Tables. Informal Design Guidelines: Table Semantics A table should hold information about one and only one entity/concept from the real world

362 views • 20 slides

Database Design

Database Design. Conceptual identify important entities and relationships determine attribute domains and candidate keys draw the E-R diagram Logical validate model using normalization Physical implement on DBMS. Logical Design. Split data into multiple tables, such that

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What is Denormalization?

What is Denormalization?.

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