POSTECH Strategic Management of Information Systems Lab

POSTECH Strategic Management of Information Systems Lab.

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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

Information System


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Trend in Business and Management

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

Information System

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

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 dataInput of data Information generatingInformation generating OutputOutput

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 ComputerTo process data about transactions

MIS(Management Information

System)Control Database

To enable people to make decision(action)

DSS(Decision Support System)

Decision PC and

Model based

To assist managers with unique strategic decisions that relatively unstructured

Types of Information SystemsTypes of Information Systems


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ISRecognition

about Information

The advent Explanation

ESS(Executive Support System)

Strategic Resource

Executive Support

To assist top-level executive

Work Group Support System

Communication CommunicationTo exchange information

(ex : EDI, WP)

ES(Expert System)

Knowledge AITo mimic the decision process of a human expert

Types of Information SystemsTypes of Information Systems


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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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Level IS

Top EIS

High DSS

Middle MIS/IPS

Low TPS

Organization Triangle to explain the relationship between the organizational structure and ISOrganization 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.