Information System

Information System is considered to be the set of inter related elements or components that collect, process and retrieve the data and the information and provides the feedback mechanism to meet an objective.

Why do organizations have Information System?

1. To make operations efficient.

2. For effective management.

3. To gain a competitive advantage.

4. To support an organizational long term goals.

Components of Information System

1. Hardware.

2. Software.

3. Data.

4. Procedures.

5. People.

Information System Development Life Cycle

1. Feasibility Studies.

2. Systems Investigation.

3. Systems Analysis.

4. Systems Design.

5. Implementation.

6. Maintenance and Review.

Information system

Operation support system

TPS PCS ECS

Management support system

MIS DSS EIS

Operation Support System

An operational support system (OSS) is a set of programs that help a communications service provider monitor, control, analyze and manage a telephone or computer network.

They are divided in 3 parts:

Transaction processing systems: A transaction processing system is a type of information system which collect, store, modify, and retrieve the transactions of an organization.

Conti…….

Process control systems: A process-control system monitors a manufacturing environment and electronically controls the process or manufacturing flow based on limits set by the user.

Enterprise collaboration systems: An Enterprise Control System support team, workgroup and enterprise communications and collaboration.

Management Support System

When information system applications focus on providing information and support for effective decision making by managers, they are called management support system.

They are divided in 3 parts:

Management Information System: MIS provide information in the form of reports and displays to managers and many business professionals.

Conti…….

Decision support system: DSS give direct computer support to managers during the decision-making process.

Executive information system: EIS provide critical information from a wide variety of internal and external sources in easy-to use displays to executives and managers.