Normalization In Databases

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zeynjfba

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Suppose that you are the database developer for a local college. The Chief Information Officer (CIO) has asked you to provide a summary of normalizing database tables that the IT staff will use in the upcoming training session.

Describe the steps that you would use in order to convert database tables to the First Normal Form, the Second Normal Form, and the Third Normal Form.
Provide one example that is relevant to a college environment that illustrates reasons for converting database tables to the First, Second, and Third Normal Forms.
Explain typical situations when denormalizing a table is acceptable. Provide one example of denormalizing a database table to justify your response.
Explain the significant manner in which business rules impact both database normalization and the decision to denormalize database tables.

Tags: Normalization databases CIS111

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Steps to Use When Converting Databases Tables
In converting databases to the first normal norm, it involves the following steps:
I.
II.
III.

The repeating groups of attributes should be removed to form a new entity.
Add the new entity to its original key.
Each column should have only single value.

Second normal norm
I.
II.

All entities should meet first normal form (1NF).
There should no column depending on its primary key.

Third normal form
I.
II.

All entities should meet first normal form (1NF) and second normal ...

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