Presentation is loading. Please wait.

Presentation is loading. Please wait.

11/12/2018.

Similar presentations


Presentation on theme: "11/12/2018."— Presentation transcript:

1 11/12/2018

2 Relational Database Design Algorithms and Further Dependencies
Chapter 11 Relational Database Design Algorithms and Further Dependencies

3 Properties of Relational Decompositions
Relation Decomposition and Insufficiency of Normal Forms Dependency Preservation Property of a Decomposition Lossless (Nonadditive) Join Property of a Decomposition Testing Binary Decomposition for the Nonadditive Join Property Successive Lossless (Nonadditive) Join Decompositions

4 Algorithms for Relational Database Schema Design
Dependency-Preserving Decomposition into 3NF Schemas Lossless (Nonadditive) Join Decomposition into BCNF Schemas Dependency-Preserving and Nonadditive (Lossless) Join Decomposition into 3NF Schemas Problems with Null Values and Dangling Tuples Discussion of Normalization Algorithms

5 Multivalued Dependencies and Fourth Normal Form
Formal Definition of Multivalued Dependency Inference Rules for Functional and Multivalued Dependencies Fourth Normal Form Lossless (Nonadditive) Join Decomposition into 4NF Relations

6 Join Dependencies and Fifth Normal Form

7 Inclusion Dependencies

8 Other Dependencies and Normal Forms
Template Dependencies Domain-Key Normal Form

9 Summary


Download ppt "11/12/2018."

Similar presentations


Ads by Google