What is a common consequence of not normalizing a database?

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Question: What is a common consequence of not normalizing a database?

Options:

Correct Answer: Data redundancy

Solution:

Not normalizing a database can lead to data redundancy, which can cause inconsistencies and anomalies.

What is a common consequence of not normalizing a database?

What is a common consequence of not normalizing a database?

Correct Answer: Data redundancy and inconsistencies

Step 1: Understand what normalization means. It is the process of organizing data in a database to reduce redundancy.
Step 2: Recognize what data redundancy is. It means having the same piece of data stored in multiple places.
Step 3: Realize that if a database is not normalized, the same data might be entered in different tables or rows.
Step 4: Know that this can lead to inconsistencies. For example, if you change the data in one place but forget to change it in another, the information becomes incorrect.
Step 5: Understand that anomalies can occur, such as difficulties in updating, deleting, or inserting data because of the redundancy.

Data Redundancy – The duplication of data within a database, which can lead to increased storage costs and potential inconsistencies.
Data Inconsistency – The situation where different copies of the same data do not match, leading to unreliable information.
Anomalies – Issues that arise during data operations such as insertion, deletion, or updating, often due to poor database design.