hardDSA

What is database normalization?

Q: What is database normalization?

**Normalization** organizes tables to reduce redundancy and anomalies. 1NF: atomic columns, no repeating groups. 2NF: no partial dependency on part of a composite key. 3NF: no transitive dependencies (non-key depending on non-key). Denormalization is sometimes used deliberately for read performance.

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normalization

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Normalization organizes tables to reduce redundancy and anomalies. 1NF: atomic columns, no repeating groups. 2NF: no partial dependency on part of a composite key. 3NF: no transitive dependencies (non-key depending on non-key). Denormalization is sometimes used deliberately for read performance.

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SQLNormal Form Demo

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