Data and Its Representation
Objectives
Process Flow
Conceptual Modeling
Concepts and Terminology
Concepts and Terminology Entity Class vs. Entity Occurrence
Basic Concepts and Terminology Attribute vs. Keys
Basic Concepts and Terminology ER, File, and Table Model
Basic Concepts and Terminology Multi-valued Attribute
Basic Concepts and Terminology Degree of Relationships
Degree of Relationships Unary Relationship
Unary Relationship - An Instance 1:M relationship
Unary Relationship - An Instance M:N relationship
Degree of Relationships Binary Relationship
Degree of Relationships Ternary Relationship
Types of Relationships Three major types
Types of Relationships Some Symbols
Cardinalities in Relationships Adding more information
A Summary Cardinalities in Relationships
Some Special Design Concerns 1. Modeling Multi-valued Attribute
Some Special Design Concerns 2. Modeling Repeating Group
Some Special Design Concerns 3. Generalization and Categorization
Some Special Design Concerns Supertype vs. Subtype
Some Special Design Concerns Exclusive Super-Subtype Relationship
Data Modeling Rules Rules for Data Integrity
Email: simpsons@vancouver.wsu.edu
Home Page: http://www.vancouver.wsu.edu/fac/simpsons/mis372/index.html
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