'Bcnf relations' diaporamas de présentation

Midterm 3 Revision 2

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Unit 18 More on Normalization ( ?? ?? ? ?? )

Unit 18 More on Normalization ( ?? ?? ? ?? ). Contents. 18.1 Introduction 18.2 Functional Dependency 18.3 First, Second, and Third Normal Forms (1NF, 2NF, 3NF) 18.4 Boyce/ Codd Normal Form (BCNF) 18.5 Fourth Normal Form (4NF) 18.6 Fifth Normal Form (5NF ).

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Normalization and Data Mining

Normalization and Data Mining. R&G Chapter 19 Lecture 27. Science is the knowledge of consequences, and dependence of one fact upon another. Thomas Hobbes (1588-1679 ). Administrivia. Homework Due a week from Today RubyOnRails help session Wed, 5-7pm, 310 Soda

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Normalization

Normalization. Normal Forms. If a relation is in a certain normal form ( BCNF, 3NF etc.), it is known that certain kinds of redundancies are avoided/minimized. This can be used to help us decide whether decomposing the relation will help. Role of FDs in detecting redundancy:

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