'Normal form 2nf' presentation slideshows

Unit Reading Assignment

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Normalization

Normalization. Part 1: The Concept. Objectives. How to undertake the normalization process . How normalization uses functional dependencies to group attributes into relations that are in a known normal form. How to identify the most commonly used normal forms:

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Normalization

Normalization.

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Lecture 2

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Chapter 7

Chapter 7. Normalization. Chapter 13 in Textbook. How to produce a good relation schema?. 1. Start with a set of relation 2. Define the functional dependencies for the relation to specify the PK 3. Transform relations to normal form. Data Redundancy. STAFFBRANCH. Address. StaffNo.

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Functional Dependencies and Relational Schema Design

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Functional Dependencies and Relational Schema Design

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Chapter 5 Normalization of Database Tables

Chapter 5 Normalization of Database Tables. Database Systems: Design, Implementation, and Management 4th Edition Peter Rob & Carlos Coronel. Database Tables and Normalization.

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INFO 340

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Component 4: Introduction to Information and Computer Science

Component 4: Introduction to Information and Computer Science. Unit 6: Databases and SQL Lecture 4.

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Normal Forms for Relational Databases

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ECIS466: Database Management LOGICAL DESIGN

ECIS466: Database Management LOGICAL DESIGN. Traditional Systems Development Lifecycle. Planning. Analysis. Logical Design. Physical Design. Implementation. Steps in Logical Database Design. Conceptual Data Model. Represent entities as relations. Represent relationships as relations.

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NORMALIZATION

NORMALIZATION. FIRST NORMAL FORM (1NF): A relation R is in 1NF if all attributes have atomic value = one value for an attribute = no repeating groups = no multivalued attributes = no composite attributes. Example. Non-1NF

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NORMALIZATION

NORMALIZATION. FIRST NORMAL FORM (1NF): A relation R is in 1NF if all attributes have atomic value = one value for an attribute = no repeating groups = no multivalued attributes = no composite attributes. Example. Non-1NF

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Normalization of Database Tables

Normalization of Database Tables. Database Systems: Design, Implementation, and Management 4th Edition Peter Rob & Carlos Coronel. Database Tables and Normalization.

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Avoiding Database Anomalies

Avoiding Database Anomalies. Unnormalized Relation. 3a. First Normal Form (1NF). A relation is in first normal form if it does not contain repeating groups. Unnormalized Relation. First Normal Form (1NF). Changes to service names have to be made on each line on which the the name appears.

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Understand Normalization

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Second Normal Form - 2NF

Second Normal Form - 2NF. It has to be the whole key. Second Normal Form (2NF). Overview. 2NF is an extension to 1NF that increases the organization in the database. A database is 2NF when all of the contained tables are 2NF.

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Normalization

Normalization. Normalization. We will take a look at First Normal Form Second Normal Form Third Normal Form There are also Boyce-Codd, Fourth and Fifth normal forms In most cases the first three normal forms are enough. normalization. Why normalization Avoid redundancy

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Session - 7 Sequence - 5

Session - 7 Sequence - 5. Normalization Boyce-Codd Normal Form Presented by: Dr. Samir Tartir. Outline. General Normal Form Definitions Boyce-Codd Normal Form. General Normal Form Definitions (1). The previous definitions consider the primary key only

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