The aim of all these theories and methods is to identify business requirements and to develop information systems that effectively meet them
Some of these theories include:
It relies mostly on the skills and experience of individual staff members carrying out the project. There are no formal procedures followed and therefore the success of the system is dependent on individual effort. In this approach, the manual system is replaced with a computerised one without change in overall structure of the former system, hence the weaknesses of the former system are not addressed and are carried forward to the new system.
RAD is also known as prototyping. A prototype is a sample used to test a concept or a process
this is a concept that products can be developed faster and of higher quality through:
Structured approach involves a set of stages that should be followed when developing a system. Each stage is documented in specifying the activities that should be carried out.
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