Date post: | 18-Jan-2017 |
Category: |
Education |
Upload: | emmanuel-alimpolos |
View: | 126 times |
Download: | 0 times |
Introduction toInformation 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 systemFormal (writen procedures) information systemComputer Based Information System
THIS COURSE MAINLY FOCUSES ON COMPUTER
BASED INFORMATION SYSTEM (CBIS)
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
Components
Make people easily do their workReal time updatingImprovement 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
Advantages
CostlySystem or network breakdown or shutdownPrivacy issues
Disadvantages
Information System terms:
•Computer• Internet•Web Pages•Networks•Databases•File Management•Virus Protection•Backup/Restore
Information System terms:
ComputerA 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:
Components of a Computer System:
Hardware – the physical partsSoftware - the instructions or programs that control the hardware
The Human Being – the brains behind the whole system!
Information System terms:
Internet 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 PagesWeb 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:
NetworksA network is a group of two
or more computer systems linked together.
TYPES:LANsWANsCANsMANsHANs
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.
TYPES:
Information System terms:
File ManagementThe operating system provides an organizational structure for the computer’s contents
Hierarchical structure of directoriesDrives FoldersSubfoldersFiles
Information System terms:
Information System terms:
DatabasesA 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 ProtectionVirus 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. Mostvirus protection utilities now bundle anti-spyware and anti-malware capabilities to go along with anti-virus protection.
Information System terms:
Backup/Restore• 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.