G3
1.
Giving reasons for your answer based on the type of system being developed,
suggest the most appropriate generic software process model that might be used
as a basis for managing the development of the following systems:
• A
system to control anti-lock braking in a car
• A
virtual reality system to support software maintenance
• A
university accounting system that replaces an existing system
• An
interactive travel planning system that helps users plan journeys with the
lowest environmental impact
a) Anti-lock braking system This is a safety-critical system so requires a
lot of up-front analysis before implementation. It certainly needs a
plan-driven approach to development with the requirements carefully analysed.
A waterfall model is therefore the most appropriate approach to use, perhaps
with formal transformations between the different development stages.
b) Virtual reality system This is a system where the requirements will
change and there will be an extensive user interface components. Incremental
development with, perhaps, some UI prototyping is the most appropriate model.
An agile process may be used.
c) University accounting system This is a system whose requirements are fairly
well-known and which will be used in an environment in conjunction with lots of
other systems such as a research grant management system. Therefore, a
reuse-based approach is likely to be appropriate for this.
d) Interactive travel planning system System with a complex user interface but which
must be stable and reliable. An incremental development approach is the most
appropriate as the system requirements will change as real user experience with
the system is gained.
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