Design Principles

Table of Contents

Design Principles

Relational Model

Relational Model (II)

Keys in Relations

Why Relations?

Abstract Vs. Concrete Relations

Relational Design

Relational Design (II)

Slightly Harder: ODL Class Without Relationships

Example

Example (II)

Example (III)

Decompose Relations?

Decompose Relations? (II)

Decompose Relations? (II)

A Design Problem

E/R Relationships -> Relations

E/R Relationships -> Relations (II)

E/R Relationships -> Relations (III)

Weak Entity Sets, Relationships -> Relations

ODL Relationships

Example

Example (II)

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Home Page: www.cs.umbc.edu/~burt