Explain normalization and the purpose of reducing data redundancy, mentioning 1NF and 2NF.

Explain normalization and the purpose of reducing data redundancy, mentioning 1NF and 2NF.

• A. 1NF ensures atomic values.
• B. Normal normalization organizes data into related tables; 1NF ensures atomic values; 2NF removes partial dependencies; reduces redundancy and anomalies.
• C. 2NF relates to encryption.
• D. Normalization increases redundancy.

Answer: (B)

Normalization organizes data by splitting it into related tables and using keys to connect them, which helps reduce duplication and keep data consistent. The first normal form requires atomic values, meaning each field holds a single value with no repeating groups. This makes data easier to manage and query. Building on that, the second normal form removes partial dependencies, so every non-key attribute depends on the entire primary key rather than just part of it. This further cuts down on duplication and prevents update, insert, and delete anomalies. In short, normalization aims to minimize redundancy and maintain data integrity by structuring data into interrelated tables; 1NF handles atomic values, and 2NF addresses dependencies to the whole key.

Normalization organizes data by splitting it into related tables and using keys to connect them, which helps reduce duplication and keep data consistent. The first normal form requires atomic values, meaning each field holds a single value with no repeating groups. This makes data easier to manage and query. Building on that, the second normal form removes partial dependencies, so every non-key attribute depends on the entire primary key rather than just part of it. This further cuts down on duplication and prevents update, insert, and delete anomalies. In short, normalization aims to minimize redundancy and maintain data integrity by structuring data into interrelated tables; 1NF handles atomic values, and 2NF addresses dependencies to the whole key.