October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth Edition
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Day 8. Database Normalization
Today, you will learn how to take a raw collection of data and break it up into more logical units, or tables, in order to reduce the occurrence of redundant data in the database. This process of reducing data redundancy is referred to as normalization. We will also discuss the advantages and disadvantages of a normalized database versus a normalized database that has been denormalized, as well as data integrity and performance issues that pertain to normalization.
By the end of this day, you should understand the following concepts and be able to apply them:
Normalization
Benefits of normalization
Denormalization
Guidelines of normalization
The three normal forms
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O’Reilly covers everything we've got, with content to help us build a world-class technology community, upgrade the capabilities and competencies of our teams, and improve overall team performance as well as their engagement.Julian F.
I wanted to learn C and C++, but it didn't click for me until I picked up an O'Reilly book. When I went on the O’Reilly platform, I was astonished to find all the books there, plus live events and sandboxes so you could play around with the technology.Addison B.
I’ve been on the O’Reilly platform for more than eight years. I use a couple of learning platforms, but I'm on O'Reilly more than anybody else. When you're there, you start learning. I'm never disappointed.Amir M.
I'm always learning. So when I got on to O'Reilly, I was like a kid in a candy store. There are playlists. There are answers. There's on-demand training. It's worth its weight in gold, in terms of what it allows me to do.