Although this topic was difficult to grasp, it was because of it that i got to understand why an executive's credentials in organisation are very much different form the the person in the supervisory level..This is also because of their responsibilities,in which they use different information systems to do their jobs..Moreover i got to learn that there are different types of IS and each type has a specific user. These include:
- Executive Support System (ESS)--used by top executives
- Transaction Processing System (TPS)--used by low-level operational managers
- Decision Support System (DSS)--used by middle level managers usually to support unstructured problems
- Management Information System (MIS)--also used by maiddle-level managers to support structured problems.
- Expert System (ES)
- Office Automated System(OAS)
FOR A CBIS to carry out its functions 6 components must be present as shown below
IS DEVELOPMENT
For the IS to be used it has to be developed and there are different ways in which an information system can be developed..The more common IS Methodologies are:
-Gane & Sarsons (STRADIS)-which is the earliest and widely used methodology
-Information Enginnering (IE)
-Structured Approach (SDLC)
-Prototyping/ iterative approach
-Jackson System Development
-Ethics
-Soft System Methodology (SSM)
STRADIS....
SDLC.....
PROTOTYPING....
We where given a task to create or develop a system as a group..My friends and i focused on created a system which will help AIU to help solve some of its unstructured as well as structured which are related to security..And i feel it was one of the best presentations as we tried to be imaginative and cohesive as we could.
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