'Design relation schemas' diaporamas de présentation

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Module 6

Module 6

Module 6. Relational Database Design. Topics to be covered. Pitfalls in relational database design Functional dependencies Armstrong Axioms Decomposition Desirable properties of decomposition Boyce-code normal form 3 rd and 4 th normal form Mention of other normal forms.

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1.04k views • 90 slides
Module 6

Module 6

Module 6. Relational Database Design. Topics to be covered. Pitfalls in relational database design Functional dependencies Armstrong Axioms Decomposition Desirable properties of decomposition Boyce-code normal form 3 rd and 4 th normal form Mention of other normal forms.

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1.15k views • 90 slides
Chapter 15 Basics of Functional Dependencies and Normalization for Relational Databases

Chapter 15 Basics of Functional Dependencies and Normalization for Relational Databases

Chapter 15 Basics of Functional Dependencies and Normalization for Relational Databases. Chapter 15 Outline. Informal Design Guidelines for Relation Schemas Functional Dependencies Normal Forms Based on Primary Keys General Definitions of Second and Third Normal Forms

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698 views • 58 slides
Chapter 15 Basics of Functional Dependencies and Normalization for Relational Databases

Chapter 15 Basics of Functional Dependencies and Normalization for Relational Databases

Chapter 15 Basics of Functional Dependencies and Normalization for Relational Databases. Chapter 15 Outline. Informal Design Guidelines for Relation Schemas Functional Dependencies Normal Forms Based on Primary Keys General Definitions of Second and Third Normal Forms

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589 views • 58 slides
Ch 4: Relational Database Design

Ch 4: Relational Database Design

Ch 4: Relational Database Design. 4.1 Features of Good Relational designs. Four Informal measures Semantics of the relation attributes Reducing the redundant values in tuples. Reducing the null values Disallowing the possibility of generating spurious(wrong) tuples.

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537 views • 38 slides

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