Lecture 2: Information system

Information Systems
UniversityofEducationOkara
Campus
1
Inam Ul-Haq
Lecturer Computer Science
MS Computer Science Sweden
organizer@dfd-charity.com, inam@ue.edu.pk

Information Systems
• Why Do People Need Information?
• Individuals - Entertainment and Enlightenment
• Businesses - Decision making, Problem Solving
and Control
UniversityofEducation
OkaraCampus
2

Information Systems
• Data vs. Information
• Data
• A “given,” fact; a number, a statement, or a picture
• The raw materials in the production of information
• Information
• Data that have meaning within a context, data after process
OkaraCampus
3

Data, Information, and Systems
• Data Processing = Information
• Example: Customer Survey
• Reading through data collected from a customer survey with
questions in various categories would be time-consuming and
not very helpful.
• When processed, the surveys may provide useful information.
OkaraCampus
4

Data, Information, and Systems
• Generating Information
• Computer-based ISs take data as raw material, process it, and
produce information as output. (Definition of Computer)
OkaraCampus
5Input-process-output

Information Systems
• What Is a System?
• System: A set of Components that work together to achieve a
common Goal
• Subsystem: One part of a system where the products of more
than one system are combined to reach an ultimate goal
• Closed System: Stand-alone system that has no contact with
other systems
• Open System: System that interfaces with other systems
OkaraCampus
6

Information Systems
OkaraCampus
7
Several subsystems make up this corporate accounting system.

Information Systems
• Information and Managers
• Systems thinking
• Creates a framework(software) for Problem Solving and
Decision Making.
• Keeps managers focused on overall goals and operations of
business.
• History: emerged in 20th
century
• Definition
Information system (IS) is the study of complementary networks
of hardware and software (IT) that people and organizations
use to collect, process, filter, create, and distribute data.
OkaraCampus
8

Information Systems
OkaraCampus
9Qualities of humans and computers that contribute to synergy

Why Study IS?
• Information Systems Careers
• Systems analyst, specialist in enterprise resource planning (ERP),
database administrator, telecommunications specialist, consulting, etc.
• Knowledge Workers
• Managers and non-managers
• Employers seek computer-literate professionals who know how to use
information technology.
• Computer Literacy Replacing Traditional Literacy
• Key to full participation in western society
OkaraCampus
10

Types of Information Systems
• Transaction processing System (TPS)
• Knowledge Management System (KMS)
• Learning Management Systems (LMS)
• Database Management System (DBMS)
• Office Information Systems (OIS)
• Management Information System (MIS)
Campus
11

Information System
Basic Components (For computer-based IS)
An IS using computer technology to carry out some or all of its
planned tasks.
•Hardware- these are the devices like the monitor, processor,
printer and keyboard, all of which work together to accept,
process, show data and information.
•Software- are the programs that allow the hardware to process
the data.
•Databases- are the gathering of associated files or tables
containing related data.
•Networks- are a connecting system that allows diverse
computers to distribute resources.
•Procedures- are the commands for combining the components
above to process information and produce the preferred output.
Campus
12

Lecture 2: Information system

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