What is information system?

Any written, electronic, or graphical method of communicating information. The basis of an information system is the sharing and processing of information and ideas. Computers and telecommunication technologies have become essential information system components.

Importance Of Information Systems.
All medium to large organisations depend on Information technology For their continued survival.

Decentralization
Minimizes information overload.


Information systems support different types of decisions at different levels of the organizational hierarchy. Major types of Information systems include structural databases and information management software that can include the following;

• Transaction Process Systems (TPS)
• Enterprise Collaboration Systems (ECS)
• Management Information Systems (MIS)
• Decision Support Systems (DSS)
• Executive Support Systems (ESS)