Information systems are comprised of interrelated hardware, software, data, procedures, and people that collect, process, store, and distribute information to meet organizational objectives. Organizations implement information systems to increase efficiency, support management, gain competitive advantages, and achieve long-term goals. Information systems development involves feasibility studies, systems investigation, analysis, design, implementation, and maintenance. Common types of information systems include operational support systems like transaction processing systems and management support systems such as management information systems, decision support systems, and executive information systems.

2. 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.

3. 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.

4. Components of Information
System
1. Hardware.
2. Software.
3. Data.
4. Procedures.
5. People.

5. Information System
Development Life Cycle
1. Feasibility Studies.
2. Systems Investigation.
3. Systems Analysis.
4. Systems Design.
5. Implementation.
6. Maintenance and Review.

6. Information system
Operation support system Management support system
TPS PCS ECS MIS DSS EIS

7. 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.

8. 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.

9. 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.

10. 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.