Transaction Processing Systems (TPS), Decision Support System
(DSS), Expert Support System (ESS), Management Information System, (MIS), and
Executive Support System (ESS) are the types of Information Systems. Information
System Has three levels. ESS, which is Strategic, DSS and MIS which is
Tactical, TPS which is operational.
EIS organizes and presents data and information from both
external data sources and internal MIS or TPS in order to support and extend the
inherent capabilities of senior executives.
DSS is a organized collection of people, procedures, software,
databases and devices used to support problem-specific decision making.
TPS is an Information system that captures and processes data
generated perform the activities associated with transaction processing.
MIS is an integrated collection of people, procedures,
databases and devices that provides managers and decision makers with
information to help achieve organizational goals.
ES is a Computerized expert systems have been developed to
diagnosed problems, predict future events and solve problems.
Other Information Systems include Office automation Systems,
End User computing Systems, Business Information Systems, Strategic Information
Systems and etc.…
The challenges of Information Systems are Work force
downsizing, Difficult to build, Security Breaches, Employees mistrust and
information over load. However there a lot of opportunities such as Enhanced
global competitiveness, Support corporate strategy, Improve quality of goods and
services, Capture market opportunities and Enhance worker productivity
In this lesson I learnt about the functions of Information
systems, Types of Information Systems and the levels into which they are
classified and what are the functions of each levels. Also I understood the
challenges and opportunities of information Systems.
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