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SYSTEM DEVELOPMENT TOOLS (CASE TOOLS (Three leading CASE tool suppliers…
SYSTEM DEVELOPMENT TOOLS
MODELLING
produces a graphical representation of a concept or process that systems developers can analyze, test, and modify
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system analyst can describe and simplify by using a set of business, data, object, network, and process models.
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PROTOTYPING
Prototyping tests system concepts & provides an opportunity to examine input,output,&user interfaces before final decision are made.
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A prototype based on careful fact finding and modelling techniques, however can be an extremely valuable tool.
Prototyping Purpose:
To tests system concepts and provides an opportunity to examine input, output, and user interfaces before final decisions are made.
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Advantage
Either way, prototyping speeds up the development process significantly.
A prototype can serve as an initial model that is used as benchmark to evaluate the finished system, or the prototype itself can develop into the final version of the system.
Possible Disadvantage:
Important decisions might be made too early, before business or IT issues are understood thoroughly.
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CASE TOOLS
A technique that uses powerful software, called CASE Tools
provide an over all framework for systems development and support a wide variety of design methodologies
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a system analyst’s can use Visio to create many different types of diagrams, including block diagrams
Building plans, forms and charts, maps, network diagrams, and organization charts.
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