Database Normalization: The One Skill Analysts Often Overlook

Learn Database Normalization (1NF, 2NF, 3NF) in just 10 minutes.
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In this video tutorial you'll learn what database normalization is, why you should normalize data, and how you can go about database normalization in just a few simple steps from first normal form, all the way to 3rd normal form. First, we'll go over the key problems with most datasets like the insertion anomaly, the update anomaly, the deletion anomaly, and the excess disk space. Then we'll go over each of the three normal forms (1NF, 2NF, and 3NF). We also explain the other normal forms (4NF, 5NF etc.) and why they're not necessarily better. This is because a higher normal form means more tables, which makes it more difficult to understand the data, and makes queries more complex. Once we understand this theory, we'll go over a practical example for you to practice the database normalization concepts you've just learned.

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Chapters:
0:00​ -​ Why Normalize Data?
2:34​ - Normal Forms
3:18​ - 1NF
4:32​ - 2NF
6:53​ - 3NF
7:44 - Other Normal Forms
8:08​ - Practical Example

Видео Database Normalization: The One Skill Analysts Often Overlook канала Kenji Explains