May 2020
Beginner
564 pages
14h 9m
English
Content preview from Learn SQL Database Programming
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The second normal form
The second normal form (2NF) is the second level of database normalization. You will need to complete 1NF before beginning this step. The primary reason to implement 2NF is to narrow tables down to a single purpose, which makes it easier to use and design tables. This step will ensure that you do the following:
- Meet the requirements of 1NF: You will need to implement 1NF before you can use 2NF.
- Remove partial dependencies: This will entail narrowing tables down to a single purpose where possible.
Starting with the tables from our 1NF example, you can break these down further into additional tables. You will still have the same player table from 1NF since it serves a single purpose of giving us player information. ...
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