MANAGEMENT INFORMATION SYSTEMS 8/E Raymond McLeod, Jr. and George Schell

Four Model Types

1) Physical models

•Three dimensional representation such as a scale model

2) Narrative models

•Spoken or written

3) Graphic models

•Abstraction of lines, symbols, or shapes

4) Mathematical models

•Equation(s)

A Graphic Model of the

 Economic Order Quantity Concept

Uses of Models

•All four models facilitate understanding and communication.

•The mathematical model also helps predict the future.

The General Systems Model

•Graphic diagram with an accompanying narrative that depicts all organizations in a general way using a systems framework

•The Physical System

•Material flow

•Personnel flow

•Machine flow

•Money flow

The Conceptual System

•Open-loop systems

•Closed-loop systems (feedback loop)

•Management control

•The information processor

A Sales Report of

Fast-Moving Products