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Introduction to Relational Database Management Systems

This chapter introduces the concepts required to understand the basics of relational database management systems (RDMS). It will introduce foundational topics such as SQL, the relational model, data integrity, database normalization, and the types of relational database management systems. It will provide you with fundamental knowledge about SQL and databases that will be required throughout this book.

In this chapter, we will cover the following topics:

Understanding SQL
Understanding databases
Understanding data integrity
Understanding database normalization
Types of RDMS

Key benefits

Explore all SQL statements in depth using a variety of examples

Get to grips with database querying, data aggregate, manipulation, and much more

Understand how to explore and process data of varying complexity to tell a story

Description

SQL is a powerful querying language that's used to store, manipulate, and retrieve data, and it is one of the most popular languages used by developers to query and analyze data efficiently. If you're looking for a comprehensive introduction to SQL, Learn SQL Database Programming will help you to get up to speed with using SQL to streamline your work in no time. Starting with an overview of relational database management systems, this book will show you how to set up and use MySQL Workbench and design a database using practical examples. You'll also discover how to query and manipulate data with SQL programming using MySQL Workbench. As you advance, you’ll create a database, query single and multiple tables, and modify data using SQL querying. This SQL book covers advanced SQL techniques, including aggregate functions, flow control statements, error handling, and subqueries, and helps you process your data to present your findings. Finally, you’ll implement best practices for writing SQL and designing indexes and tables. By the end of this SQL programming book, you’ll have gained the confidence to use SQL queries to retrieve and manipulate data.

Who is this book for?

This book is for business analysts, SQL developers, database administrators, and students learning SQL. If you want to learn how to query and manipulate SQL data for database administration tasks or simply extract and organize relevant data for analysis, you’ll find this book useful. No prior SQL experience is required.

What you will learn

Install, configure, and use MySQL Workbench to restore a database

Explore different data types such as string, numeric, and date and time

Query a single table using the basic SQL SELECT statement and the FROM, WHERE, and ORDER BY clauses

Query multiple tables by understanding various types of table relationships

Modify data in tables using the INSERT, UPDATE, and DELETE statements

Use aggregate functions to group and summarize data

Detect bad data, duplicates, and irrelevant values while processing data

What do you get with Print?

Instant access to your digital eBook copy whilst your Print order is Shipped

Paperback book shipped to your preferred address

Download this book in EPUB and PDF formats

Access this title in our online reader with advanced features

DRM FREE - Read whenever, wherever and however you want

AI Assistant (beta) to help accelerate your learning

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Alan Sep 13, 2023

I studied relational database systems and SQL many years ago at post graduate level and needed to brush up on the subject. This book was exactly what I was looking for. The author is straight to the point and gives good examples. I enjoyed the book.

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Matthew McDowell Nov 23, 2020

Perfect beginner reference, the author has done a fantastic job! Easy to understand and a practical guide that can show you beginning steps to query a database as well as more advanced means off accessing and manipulating data. The book even goes into more advanced techniques for someone interested in database administration. This book goes over best practices in a clear manner with plenty of examples. As someone who works with relational databases on a daily basis, this book has helped me understand the fundamentals of what I knew how to do and has helped elevate the way I write queries. There is plenty left for me to learn and this book will continue to remain an invaluable tool!

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Bladwell Martinez Costas Jun 06, 2022

Me agrado mucho este articulo.

Vanessa Feb 13, 2021

This book is very well-written and shows step by step how to manipulate data in SQL. It is written in an easy to read fashion, that helps the reader have an understanding of each query. There are many examples throughout to help show the process for a clear understanding of the fundamentals. There are also more advanced techniques shown, so the book isn't just for beginners either.

Just Some Guy Jan 15, 2022

This isn't a bad book - it's actually pretty good. It's just not what the title claims. This book is good a good buy for 1 of these 2 use cases:1) You're brand new to using a real database (Excel and Access don't count), and you want a high-level introduction to using MySQL and writing SQL queries, etc.2) You're quite good with SQL and databases already, and you just want a reference on your desk you can flip open to check the syntax on part of your query, or similar reference-type needs.Besides that, I think this book is a miss. It's covers a lot of ground, but it moves really fast, and barely anything goes into much depth. As a result, if you're new to SQL then you won't actually *learn* much here (there are too few examples, and they never go into much depth) – but if you're a pro this is all pretty obvious, so you won't learn anything new.My main other complaint about this book is that for a book with "Programming" in the title, it barely meets that standard at all. Besides a quick pass on functions and stored procedures (which do involve programming via SQL), almost everything this book does is via the MySQL Workbench tool. Now, that's great if learning Workbench is your goal - but if you want to manage your database via APIs, or do anything programmatic whatsoever (via a language like Python, Java, etc.), this book has ZERO on ANY of that. The work "Programming" has no place in the title of this book.Two other minor complaints:1) There are some sloppy typos and technical errors that should have been caught by the editors - and that happened a couple times too many for me to ignore.2) The book really feels like the author was trying to pad the page count. There are a TON of screenshots (again, mostly of MySQL Workbench). While I usually like those, for reference, they were larger and more frequent than necessary. There are also pages of content that get very repetitive - like, the author would often repeat the same exact paragraph multiple times when explaining a list of things that were mostly the same, but had only slight differences. (for example, a full paragraph explaining an example with a logical TRUE/IN/= use case, and then the exact same paragraph repeated again but with just a couple words changed to explain the respective FALSE/NOT IN/!= use case). Pages of text could have been saved by using a more compact writing approach.All that said, this is a pretty good book for the 2 needs I mentioned at the top of this review. If that's you, buy it and make the most of it. But anyone wanting to really learn how to "program SQL" will need to read a few other books, too. Now you know.

Entity integrity	Referential integrity	Domain integrity
Unique constraint	Foreign key	Check constraint
Not null constraint		Default constraint
Primary key...

Learn SQL Database Programming: Query and manipulate databases from popular relational database servers using SQL

What do you get with Print?

Learn SQL Database Programming

Introduction to Relational Database Management Systems

Understanding SQL

Understanding databases

Tables

Understanding data integrity

Types of integrity

Database normalization

The first normal form

Types of RDMS

Oracle

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