Page 24 - DCAP205_DCAP409_ANALYSIS_AND_DESIGN_OF_INFORMATION_SYSTEMS

Analysis & Design of Information Systems

Notes 1.4.4 Office Automation System (OAS)

This system serves the knowledge level of an organization for supporting knowledge workers
like production managers, EDP managers, etc. OAS use computer system to increase the
productivity of technical managers in the office.
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 among
employees. With an office information system, also described as office automation; employees
perform tasks electronically using computers and other electronic devices, instead of manually.

Example: With an office information system, 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 house.

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. All
levels of users from executive management to non management 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.

1.4.5 Transaction Processing System (TPS)

This system is designed to serve the operational level of an organization. TPS record and process
the daily routine transactions of the organization like, accounting, payroll, order processing, etc.
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 performs the activities associated with transaction processing, which
include the following:
Recording a business activity such as a student’s registration, a customer’s order, an employee’s
timecard or a client’s payment. Confirming an action or triggering a response, such as printing
a student’s schedule, sending a thank-you note to a customer, generating an employee’s paycheck
or issuing a receipt to a client. Maintaining data, which involves adding new data, changing
existing data, or removing unwanted data.
Transaction processing systems were among the first computerized systems developed to process
business data – a function originally called data processing. Usually, the TPS computerized an
existing manual system to allow for faster processing, reduced clerical costs and improved
customer service.
The first transaction processing systems usually used batch processing. With batch processing,
transaction data is collected over a period of time and all transactions are processed later, as a
group. As computers became more powerful, system developers built online transaction
processing systems. With Online Transaction Processing (OLTP) the computer processes
transactions as they are entered. When you register for classes, your school probably uses OLTP.

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