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Allen G. Taylor - SQL For Dummies

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Allen G. Taylor SQL For Dummies

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SQL For Dummies 9th Edition Published by John Wiley Sons Inc 111 River - photo 1

SQL For Dummies 9th Edition Published by John Wiley Sons Inc 111 River - photo 2

SQL For Dummies 9th Edition

Published by: John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030-5774, www.wiley.com

Copyright 2019 by John Wiley & Sons, Inc., Hoboken, New Jersey

Published simultaneously in Canada

No part of this publication may be reproduced, stored in a retrieval system or transmitted in any form or by any means, electronic, mechanical, photocopying, recording, scanning or otherwise, except as permitted under Sections 107 or 108 of the 1976 United States Copyright Act, without the prior written permission of the Publisher. Requests to the Publisher for permission should be addressed to the Permissions Department, John Wiley & Sons, Inc., 111 River Street, Hoboken, NJ 07030, (201) 748-6011, fax (201) 748-6008, or online at http://www.wiley.com/go/permissions .

Trademarks: Wiley, For Dummies, the Dummies Man logo, Dummies.com, Making Everything Easier, and related trade dress are trademarks or registered trademarks of John Wiley & Sons, Inc. and may not be used without written permission. John Wiley & Sons, Inc. is not associated with any product or vendor mentioned in this book.

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Library of Congress Control Number: 2018960776

ISBN: 978-1-119-52707-7 (pbk); ISBN: 978-1-119-52708-4 (ePDF); ISBN: 978-1-119-52709-1 (ePub)

SQL For Dummies
To view this book's Cheat Sheet, simply go to www.dummies.com and search for SQL For Dummies Cheat Sheet in the Search box.
Table of Contents
Guide
Pages
Introduction

Welcome to database development using SQL, the industry-standard database query language. Many database management system (DBMS) tools run on a variety of hardware platforms. The differences among the tools can be great, but all serious products have one thing in common: They support SQL data access and manipulation. If you know SQL, you can build relational databases and get useful information out of them.

About This Book

Relational database management systems are vital to many organizations. People often think that creating and maintaining these systems must be extremely complex activities the domain of database gurus who possess enlightenment beyond that of mere mortals. This book sweeps away the database mystique. In this book, you

  • Get to the roots of databases.
  • Find out how a DBMS is structured.
  • Discover the major functional components of SQL.
  • Build a database.
  • Protect a database from harm.
  • Operate on database data.
  • Determine how to get the information you want out of a database.

The purpose of this book is to help you build relational databases and get valuable information out of them by using SQL. SQL is the international standard language used to create and maintain relational databases. This edition covers the latest version of the standard, SQL:2016.

This book doesnt tell you how to design a database (I do that in Database Development For Dummies, also published by Wiley). Here I assume that you or somebody else has already created a valid design. I then illustrate how you implement that design by using SQL. If you suspect that you dont have a good database design, then by all means fix your design before you try to build the database. The earlier you detect and correct problems in a development project, the cheaper the corrections will be.

Foolish Assumptions

If you need to store or retrieve data from a DBMS, you can do a much better job with a working knowledge of SQL. You dont need to be a programmer to use SQL, and you dont need to know programming languages, such as Java, C, or BASIC. SQLs syntax is like that of English. If you are a programmer, you can incorporate SQL into your programs. SQL adds powerful data manipulation and retrieval capabilities to conventional languages. This book tells you what you need to know to use SQLs rich assortment of tools and features inside your programs.

Icons Used in This Book

When something in this book is particularly valuable, we go out of our way to make sure that it stands out. We use these cool icons to mark text that (for one reason or another) really needs your attention. Heres a quick preview of the ones waiting for you in this book and what they mean.

SQL For Dummies - image 3 Tips save you a lot of time and keep you out of trouble.

SQL For Dummies - image 4 Pay attention to the information marked by this icon you may need it later.

SQL For Dummies - image 5 Heeding the advice that this icon points to can save you from major grief. Ignore it at your peril.

SQL For Dummies - image 6 This icon alerts you to the presence of technical details that are interesting but not absolutely essential to understanding the topic being discussed.

Beyond the Book

In addition to the content in this book, youll find some extra content available at the www.dummies.com website:

  • For the Cheat Sheet for this book, visitwww.dummies.com/ and search for SQL For Dummies 9E cheat sheet.
  • For updates to this book, if any, visit the
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