Introduction to
Information System
ACLC Butuan
What is it?
 According BussinessDictionary.com information system is a
combination of hardware, software, infrastructure and
trained personnel organized to facilitate planning, control,
coordination and decision making in an organization.
 Information system is a such as one in the opening scenario
are combinations of hardware, software, and
telecommunications networks that people build and use to
collect, create an didtribute useful data especially in
organizational settings . (Information Systems Today : Why
is Matter? Second Edition).
Types of IS
Manual (paper/pencil) information system
Informal (word to mouth) information system
Formal (writen procedures) information system
Computer Based Information System
THIS COURSE MAINLY FOCUSES ON
COMPUTER BASED INFORMATION
SYSTEM (CBIS)
Components
Figure 1.0 An information system is a combination of five key
elements : people, hardware, software, data and
telecommunications networks. (Information Systems Today :
Why is Matter? Second Edition)
Components
Advantages
Make people easily do their work
Real time updating
Improvement of quality care of organization
Help the user to store large amount of
information
Has made possible for business to be open
24x7 all over the globe
The creation of new and interesting jobs
Disadvantages
Costly
System or network breakdown
or shutdown
Privacy issues
Information System terms:
• Computer
• Internet
• Web Pages
• Networks
• Databases
• File Management
• Virus Protection
• Backup/Restore
Information System terms:
A computer is a general
purpose, programmable
device or electronic
machine that is used for
the production and
processing of information
capable of calculating and
storing results
Information System terms:
Hardware – the physical parts
Software - the instructions or programs that
control the hardware
The Human Being – the brains behind the
whole system!
Information System terms:
 It’s a worldwide network of
computers that allows the
"sharing" or "networking" of
information at remote sites from
other academic institutions,
research institutes, private
companies, government
agencies, and individuals.
 It allows people to send and
receive data wherever they are in
the world if they have internet
access
Information System terms:
 Web pages are what make
up the World Wide Web.
These documents are
written in HTML (hypertext
markup language) and are
translated by your Web
browser.
Information System terms:
 A network is a group of two
or more computer systems
linked together.
TYPES:
LANs
WANs
CANs
MANs
HANs
Information System terms:
 local-area networks (LANs): The computers are geographically
close together (that is, in the same building).
 wide-area networks (WANs): The computers are farther apart
and are connected by telephone lines or radio waves.
 campus-area networks (CANs): The computers are within a
limited geographic area, such as a campus or military base.
 metropolitan-area networks MANs): A data network designed
for a town or city.
 home-area networks (HANs): A network contained within a
user's home that connects a person's digital devices.
Information System terms:
The operating system provides an
organizational structure for the computer’s
contents
Hierarchical structure of directories
 Drives
 Folders
Subfolders
 Files
Information System terms:
Information System terms:
 A database is a collection of
information that is organized
so that it can easily be
accessed, managed, and
updated. In one
view, databases can be
classified according to types
of content: bibliographic,
full-text, numeric, and
images.
Information System terms:
 Virus protection software is
designed to prevent viruses,
worms and Trojan horses
from getting onto a
computer as well as remove
any malicious software code
that has already infected a
computer. Most virus
protection utilities now
bundle anti-spyware and
anti-malware capabilities to
go along with anti-virus
protection.
Information System terms:
•What might cause you a need to recover?
•Unintended deletion of a database object (rows, columns, tables).
•Unintended deletion of a server object (databases, chunks, dbspace).
•Data corruption or incorrect data created.
•Hardware failure (such as when a disk that contains chunk files fails).
•Database server failure.
•Natural disaster.
•What to backup ?
•Depending on the recovery plans.