2nf clean part1 - PowerPoint PPT Presentation
Unnormalized
Unnormalized. 1NF. Redundancy Unleashed. 2NF Raw - Part1. 2NF Raw - Part2. 2NF Clean - Part1. 2NF Clean – Part2. 3NF Clean – Part2. 3NF Clean – Part2.
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Second Normal Form (2NF) . A relation R is in 1NF, and every non-primary-key attribute is fully functionally dependent on the primary key Then R is in 2NF No Partial FDs on the PK. Third Normal Form (3NF). Relation R in 2NF, and
Normalization: 1NF, 2NF, 3NF
Normalization: 1NF, 2NF, 3NF. First normal form (1NF) – entity whose attributes have no more than one value for a single instance of that entity Any attributes that can have multiple values actually describe a separate entity, possibly an entity and relationship.
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1NF, 2NF, and 3NF
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Trees-part1
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