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Normalization
 

Normalization

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    Normalization Normalization Presentation Transcript

    • Nittaya Wongyai
    • Normalization Normalization Normal Form 3  1 1NF  2 2NF E.F.Codd  3 3NF  Boyce/Codd Normal Form BCNF  4 4NF Fagin  5 5NF
    • Normalization
    • ER-to-Relational Mapping Algorithm Strong Entity (PK) P1101 6 990 P1102 199
    • ER-to-Relational Mapping Algorithm PK J1101 2554 Weak Entity J1102 2554 FK) J1101 J1102
    • PK550987786 Associative550987787 Entity (FK) (FK)550987786 LSIT1111 89 A550987787 LSIT1113 49 F PK LSIT1111 LSIT1113
    • The Process of Normalization: First Normal Form 1NF 1NF Atomic 1 Repeating groups
    • The Process of Normalization: First Normal Form 1NF
    • The Process of Normalization: Second Normal Form 2NF 2NF 1NF (Primary key) Composite key Partial Dependency
    • The Process of Normalization: Second Normal Form 2NF1NF2NF
    • 2 NF
    • The Process of Normalization: Third Normal Form 3NF 3NF 2NF Transitive Dependency
    • The Process of Normalization: Third Normal Form 3NF2NF3NF
    • Boyce-Codd Normal Form(BCNF) (Candidate key) 2
    • BCNF
    • The Process of Normalization: Fourth Normal Form 4NF BCNF Multivalued Dependencies (MVDs)  3  2
    • BCNF 4NF
    • BCNF4NF
    • The Process of Normalization: Fifth Normal Form 5NF 4NF Join Dependency
    • 5 NF
    • 5 NF