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    Creating your MySQL Database: Practical Design Tips and Techniques
    Creating your MySQL Database: Practical Design Tips and Techniques
    Creating your MySQL Database: Practical Design Tips and Techniques
    Ebook218 pages1 hour

    Creating your MySQL Database: Practical Design Tips and Techniques

    By Marc Delisle

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    About this ebook

    This book takes a practical approach, implementing all theoretical concepts with examples. It is a fast-paced tutorial that focuses on critical decisions that you need to make every time you build MySQL databases. It is rich with tips and advice from an experienced practitioner. Anyone working with applications that use a MySQL database backend will benefit greatly from the advice and techniques in this book. Although a working knowledge of both SQL and MySQL is assumed, the book is suitable for both beginners and intermediate users alike. Whether you read it through and absorb the advice or work through it on a live project, the efficiency and maintainability of your databases will certainly improve as a result.
    LanguageEnglish
    PublisherPackt Publishing
    Release dateNov 25, 2006
    ISBN9781847190208
    Creating your MySQL Database: Practical Design Tips and Techniques
    Author

    Marc Delisle

    Marc Delisle was awarded "MySQL Community Member of the year 2009" because of his involvement with phpMyAdmin. He started to contribute to the project in December 1998, when he made the multi-language version. He is still involved with phpMyAdmin as a developer and project administrator. Marc is a system administrator at Cegep de Sherbrooke, Québec, Canada. He has been teaching networking, security, and web application development. In one of his classes, he was pleased to meet a phpMyAdmin user from Argentina. Marc lives in Sherbrooke with his wife and they enjoy spending time with their four children.

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      Book preview

      Creating your MySQL Database - Marc Delisle

      Table of Contents

      Creating your MySQL Database: Practical Design Tips and Techniques

      Credits

      About the Author

      About the Reviewer

      0. Preface

      What This Book Covers

      What You Need for This Book

      Conventions

      Reader Feedback

      Customer Support

      Downloading the Example Code for the Book

      Errata

      Questions

      1. Introducing MySQL Design

      MySQL's Popularity and Impact

      The Need for MySQL Design

      What do I do Next?

      Data Design Steps

      Data as a Resource

      But this is my Data!

      Data Modeling

      Overview of the Relational Model

      Rule #1

      Rule #2

      Simplified Design Technique

      Case Study

      Our Car Dealer

      The System's Goals

      The Tale of the Too Wide Table

      Summary

      2. Data Collecting

      System Boundaries Identification

      Modular Development

      Model Flexibility

      Document Gathering

      General Reading

      Forms

      Existing Computerized Systems

      Interviews

      Finding the Right Users

      Perceptions

      Asking the Right Questions

      Existing Information Systems

      Chronological Events

      Sources and Destinations

      Urgency

      Avoid Focusing on Reports and Screens

      Data Collected for our Case Study

      From the General Manager

      From the Salesperson

      From the Store Assistant

      Other Notes

      Summary

      3. Data Naming

      Data Cleaning

      Subdividing Data Elements

      Data Elements Containing Formatting Characters

      Data that are Results

      Data as a Column's or Table's Name

      Planning for Changes

      Pitfalls of the Free Fields Technique

      Naming Recommendations

      Designer's Creativity

      Abbreviations

      Clarity versus Length: an Art

      Suffixing

      The Plural Form

      Naming Consistency

      MySQL's Possibilities versus Portability

      Table Name into a Column Name

      Summary

      4. Data Grouping

      Initial List of Tables

      Rules for Table Layout

      Primary Keys and Table Names

      Data Redundancy and Dependency

      Composite Keys

      Improving the Structure

      Scalability over Time

      Empty Columns

      Avoiding ENUM and SET

      Multilingual Planning

      Validating the Structure

      Summary

      5. Data Structure Tuning

      Data Access Policies

      Responsibility

      Security and Privileges

      Views

      Storage Engines

      Foreign Key Constraints

      Performance

      Indexes

      Helping the Query Optimizer: Analyze Table

      Accessing Replication Slave Servers

      Speed and Data Types

      Table Size Reduction

      In-Column Data Encoding

      Case Study's Final Structure

      Vehicle

      Person

      Sale

      Other tables

      Summary

      6. Supplemental Case Study

      Results from the Document Gathering Phase

      Preliminary List of Data Elements

      Tables and Sample Values

      Code Tables

      Themed Tables

      Composite-Key Tables

      Airline System Data Schema

      Sample Queries

      Inserting Sample Values

      Boarding Pass

      Passenger List

      All Persons on a Flight

      Summary

      Index

      Creating your MySQL Database: Practical Design Tips and Techniques

      Marc Delisle

      Creating your MySQL Database: Practical Design Tips and Techniques

      Copyright © 2006 Packt Publishing

      All rights reserved. No part of this book may be reproduced, stored in a retrieval system, or transmitted in any form or by any means, without the prior written permission of the publisher, except in the case of brief quotations embedded in critical articles or reviews.

      Every effort has been made in the preparation of this book to ensure the accuracy of the information presented. However, the information contained in this book is sold without warranty, either express or implied. Neither the author, Packt Publishing, nor its dealers or distributors will be held liable for any damages caused or alleged to be caused directly or indirectly by this book.

      Packt Publishing has endeavored to provide trademark information about all the companies and products mentioned in this book by the appropriate use of capitals. However, Packt Publishing cannot guarantee the accuracy of this information.

      First published: November 2006

      Production Reference: 1141106

      Published by Packt Publishing Ltd.

      32 Lincoln Road

      Olton

      Birmingham, B27 6PA, UK.

      ISBN 10: 1-904811-30-2

      ISBN 13: 978-1-904811-30-5

      www.packtpub.com

      Cover Image by www.visionwt.com

      Credits

      Author

      Marc Delisle

      Reviewer

      Rudy Limeback

      Development Editor

      Louay Fatoohi

      Assistant Development Editor

      Nikhil Bangera

      Technical Editor

      Mithil Kulkarni

      Editorial Manager

      Dipali Chittar

      Project Manager

      Patricia Weir

      Indexer

      Bhushan Pangaonkar

      Proofreader

      Martin Brooks

      Layouts and Illustrations

      Shantanu Zagade

      Cover Designer

      Shantanu Zagade

      About the Author

      Marc Delisle is a member of the MySQL Developers Guild, which regroups community developers—because of his involvement with phpMyAdmin. He started to contribute to this popular MySQL web interface in December 1998, when he made the first multi-language version. He has been actively involved with the phpMyAdmin project since May 2001 as a developer and project administrator.

      He has worked since 1980 at Collège de Sherbrooke, Québec, Canada, as an application programmer and network manager. He has also been teaching networking, security, Linux servers, and PHP/MySQL application development.

      I would like to thank the whole Packt team for their support, especially Louay Fatoohi and Nikhil Bangera; their advice helped shaping this book. My thanks also go to Rudy Limeback for his insight.

      The developers of the MySQL software have earned my respect; may they find here my warm gratitude for their excellent product.

      I hope that this book will assist readers into building effective data structures.

      To Carole, André, Corinne, Annie, and Guillaume, with all my love.

      About the Reviewer

      Rudy Limeback is an SQL Consultant with close to 20 years of experience using SQL in one database system or another. He is located in Toronto, Canada but, thanks to the miracle that is the Internet, consults for clients all over the wide world.More information on SQL and Web development can be found on Rudy's website, http://www.r937.com/.

      Chapter 0. Preface

      MySQL, launched in 1995, has become the most popular open source database system. The popularity of MySQL and phpMyAdmin has allowed many non-IT specialists to build dynamic websites with a MySQL backend. This book is a short but complete guide showing beginners how to design good data structures for MySQL. It teaches how to plan the data structure and how to implement it physically using MySQL's model.

      What This Book Covers

      Chapter 1 introduces the concept of MySQL, and discusses MySQL's growing popularity and its impact as a powerful tool. This chapter gives us a brief overview of the relational models and Codd's rules, which are required for designing purposes. A brief introduction to our case study—car dealer is provided at the end.

      Chapter 2 shows how to deal with the raw data information that comes from the users or other sources, and the techniques that can help us build a comprehensive data collection. Also, this chapter covers the exact limits of the analyzed system, how one should gather documents, and interview activities for our case study.

      Chapter 3 emphasises on transforming the data elements gathered in the collection process into a cohesive set of column names. The concept of data naming is also discussed in this chapter.

      Chapter 4 provides the technique of grouping column names into tables. Rules for table

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