TYPES OF INFORMATION SYSTEMS
An information system is a collection of hardware, software, data, people and procedures that
are designed to generate information that supports the day-to-day, short-range, and long-range
activities of users in an organization.
Information systems generally are classified into five
office information systems, transaction processing systems, management information
systems, decision support systems, and expert systems.
The following sections present each of
these information systems.
Office Information Systems
An office information system, or OIS (pronounced oh-eye-ess), is an information system that
uses hardware, software and networks to enhance work flow and facilitate communications
Win an office information system, also described as office automation;
employees perform tasks electronically using computers and other electronic devices, instead of
With an office information system, for example, a registration department might post
the class schedule on the Internet and e-mail students when the schedule is updated.
In a manual
system, the registration department would photocopy the schedule and mail it to each student’s
An office information system supports a range of business office activities such as creating
and distributing graphics and/or documents, sending messages, scheduling, and accounting.
levels of users from executive management to nonmanagement employees utilize and benefit
from the features of an OIS.
The software an office information system uses to support these activities include word
processing, spreadsheets, databases, presentation graphics, e-mail, Web browsers, Web page
authoring, personal information management, and groupware.
Office information systems use
communications technology such as voice mail, facsimile (fax), videoconferencing, and
electronic data interchange (EDI) for the electronic exchange of text, graphics, audio, and video.
An office information system also uses a variety of hardware, including computers equipped
with modems, video cameras, speakers, and microphones; scanners; and fax machines.
Transaction Processing Systems
A transaction processing system (TPS) is an information system that captures and processes
data generated during an organization’s day-to-day transactions.
A transaction is a business
activity such as a deposit, payment, order or reservation.
Clerical staff typically perform the activities associated with transaction processing, which
include the following:
1. Recording a business activity such as a student’s registration, a customer’s order, an
employee’s timecard or a client’s payment.
2. Confirming an action or triggering a response, such as printing a student’s schedule,