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The SQL Workshop

You're reading from The SQL Workshop Learn to create, manipulate and secure data and manage relational databases with SQL

Product type Paperback

Published in Dec 2019

Publisher Packt

ISBN-13 9781838642358

Length 288 pages

Edition 1st Edition

Languages

SQL

Tools

SQL Server

Concepts

Databases

Authors (3):

Prashanth Jayaram

Frank Solomon

Awni Al Saqqa

View More author details

Table of Contents (13) Chapters

Preface

1. SQL Basics FREE CHAPTER

2. Manipulating Data

3. Normalization

4. The SELECT Statement

5. Shaping Data with the WHERE Clause

6. JOINS

7. Subqueries, Cases, and Views

8. SQL Programming

9. Security

10. Aggregate Functions

11. Advanced SQL

Appendix

The Concept of Normalization

Suppose we have a piece of software in our enterprise called Enterprise Server Manager that manages all the computers. The Enterprise Server Manager (ESM) has information about what computers we have, the operating system they run on, the version of the operating system, and so on.

Now, each server works for one or more teams. The respective teams have all the authority on these servers, along with being responsible for them. Imagine that you want the heads of the teams tagged as the owners of the servers. The server entries should contain the employee IDs, the names, the designations, and the department names of these owners. Here is an example:

Figure 3.1: ESM Agent details

The preceding table has all the information we need and the data looks consistent for now, right? Jon Doe's information is being repeated, though. Is that an issue?

Imagine that Jon Doe leaves the organization and Jim Doe replaces him. Now, imagine...

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Authors (3)

Frank Solomon

Frank Solomon

Frank Solomon started out building front-end and database software with Microsoft stack tools such as SQL Server and ASP and then extended into ASP.NET, C#, VB.NET, JavaScript, and more. He learns about new products, languages, and technologies all the time, and he pushed into technical writing as a way to present and express his research and discoveries. He works as a contractor right now. He has worked in start-ups himself, and he knows that the hard work of writers and developers makes the end user experience easier.

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Awni Al Saqqa

Awni Al Saqqa

Awni Al Saqqa is a Microsoft Technology Specialist in MS SQL Server and a certified solutions developer since 2007. He has over a decade of experience with database development and administration on SQL Server, Oracle, and MySQL. He is a solutions architect, who is hands-on in many enterprise projects for different business sectors, such as education, hospitality, retail, manufacturing, marketing, and more, which has given him the perfect combination between business and technical experience.

See other products by Awni Al Saqqa

Prashanth Jayaram

Prashanth Jayaram

Prashanth Jayaram is a database technologist, blogger, engineering lead, automation expert, TechNet wiki ninja, PowerShell Geek, and technologist enthusiast with extensive experience in designing database solutions. He is the author of PowerShell 6.0 Linux Administration Cookbook and has hands-on experience with the next generation database technologies. He has been awarded as ABOVE and BEYOND and Best SQL Author 2018 towards his contribution to SQL Server technology. He has articulated over 200+ articles widespread across SQL, NoSQL, PowerShell, Python, SQL on Linux, SQL on Azure, and SQL on AWS arenas.

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