Information System in an Organization:
Top managers make strategic decisions using unstructured information, as we have discussed. Middle managers make tactical decisions using semi-structured information. Lower level managers make operational decisions using structured information, the purpose of a computer based information system is to provide managers with the appropriate kind of information to help them make decisions.
Types of Computer Based Information System:
Here we describe the following types of computer based information systems, corresponding to the three management layers and their requirements.
Organizational Information System
|Transaction Processing System
|Management Information System
|Decisions Support System
|Executive Information System
|Office Automation System
||All Levels of Management