What is a system? is an interrelated set of components that function together an outcome.
Three Major Components:
Input
Processing
Output
It consists of the following elements:
Purpose
Subsystems
Environment
Boundary
Connections
Control Mechanisms
Systems Concepts
Business System
collection of policies, methods, people, machines, and other elements that interact and enable the organization to achieve its goals.
Information System
collection of interrelated components that collect, process, store, and provide as output information needed to complete a business task.
Components
Work practice
Information
People
Information technology
Reasons for the need of Information System
growing size of the organization and the number of competitors. growing ability of computers to process large amount of data with great speed. dramatic increase in volumes of data generated. advances in communication technologies to permit faster data transfer. increase in pace if business transactions. much more sophisticated technology today.
Types of Information System
Transaction Processing System (TPS)
process large amount of data for routine business activities and transaction. very important for the organization since they gather all the input necessary for the other type of information system.
Management Information System (MIS)
provide a standard reports for managers about transaction data. work on the purposeful interaction between people and computers. supports a broader range of organizational tasks to include not only TPS but also decision analysis and decision making. help unite some of the computerized information function of a business. designed to take relatively raw data available through a TPS and convert them into a summarized and aggregated form for managers, usually in report format.
Decision Support System (DSS)
0. provides an interactive environment in which