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Introduction to Information Systems

IMEN 381

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Contents

Introduction

Trend in Business and Management

What is an Information System?

What Does an Information System Do?

Does Information System Need Computers?

What Types of Information System Exist?

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Introduction

Information System

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Trend in Business and Management

Business and

Management

Global

Customer

Information

Technology

Blurring of industry boundaries Deregulation of industries Faster pace of business Increasing foreign competition

Global business community An information society Increasing complexity of management Interdependence of organization units Improvement of productivity Availability of computers for end-users Recognition of information as a resource

driven

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What is an Information System?(1/2)

A set of people, data, procedure to provide useful information

Information System

People

Data

Procedure

Communication of information

Management of activities

Decision making

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What is an Information System?(2/2)

Computer based loan information

systems

Banking database

Economic database

• Fund on deposit • Loan balance • Balance financial plan• Loan portfolio

• Employment data• Economic data

Processor

Information supplied by applicant for loan

• Financial status• Loan details• Employment status

Components of a Loan Information System

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What Does an Information System Do?

An information system performs three general activities It accepts data from sources as input It acts on data to process(produce) information : information generating system The system outputs the information for the user, manager or staff

member

Input of data Information generating Output

First Step Second Step Third Step

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Does an Information System Need Computer?

95% 5%

Yes No

As the volume of work grows procedures increase in complexity,

activities become more interrelated,

improvements can be gained by introducing computer

assistance

Small size mana-gemen-t

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What types of Information Systems Exist?(1/4)

ISRecognition

about Information

The advent Explanation

TPS(Transaction Processing System) Efficiency Computer To process data about

transactions

MIS(Management Information

System)Control Database To enable people to make

decision(action)

DSS(Decision Support System) Decision

PC andModel based

To assist managers with unique strategic decisions that relatively unstructured

Types of Information Systems

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What types of Information Systems Exist?(2/4)

ISRecognition

about Information

The advent Explanation

ESS(Executive Support System)

Strategic Resource

Executive Support To assist top-level executive

Work Group Support System Communication Communication

To exchange information(ex : EDI, WP)

ES(Expert System) Knowledge AI To mimic the decision

process of a human expert

Types of Information Systems

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What types of Information Systems Exist?(3/4)

1950 1960 1970 1980 1990 2000~

TPS(Transaction Processing System)

MIS(Management Information System) IPS(Information Processing System)

DSS(Decision Support System)ESS(Executive Support System)

EIS(Executive Information System)

ES(Expert System)

?

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What types of Information Systems Exist?(4/4)

Level IS

Top EIS

High DSS

Middle MIS/IPS

Low TPS

Organization Triangle to explain the relationship between the organizational structure and IS

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Summary

Today Information Systems touch every aspects of Biz.

The effective use of information systems in management

builds on a vision.

A computer is a useful and powerful tool in Information

Systems.

Types of Information Systems are TPS, MIS, IPS, DSS,

ESS, EIS and ES.