October 2002
Beginner
864 pages
18h 41m
English
Content preview from Sams Teach Yourself SQL in 21 Days, Fourth EditionBecome an O’Reilly member and get unlimited access to this title plus top books and audiobooks from O’Reilly and nearly 200 top publishers, thousands of courses curated by job role, 150+ live events each month,
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Making Normalization Work
Now that you know the basic concepts of normalization, you must learn how to make normalization work in a real database. You need to know when to normalize a database and when to denormalize a database. A good rule of thumb when designing a database is the more time spent upfront in planning and design, the fewer headaches during the implementation and maintenance of a database. The following subsections help you understand how to
Use constraints to enforce referential integrity
Know when to use normalization
Know when to denormalize a database
Referential Integrity
Referential integrity is the assurance of consistent and accurate data within a database. Referential integrity simply means that the values of one column ...
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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.