- A database relation (e.g., a database table) whose attributes (e.g., database columns) are functionally dependent solely on the primary key. 3NF was defined in 1971 by Edgar F. Codd as a relation in second normal form where all non-prime attributes depend only on the candidate keys and do not have a transitive dependency on another key. ← Wikipedia
- Related terms: Second normal form, First normal form, Normal form, Primary key
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