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What is a Root definition ?
A Root definition is a structured and concise description of a system.
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What are the characteristics of the root definition ?
· Who
· What
· Whom
· Who
· Answerable
· Environment
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What is the sentence with the characteristics ?
Who is doing what for whom, and to who are they answerable, what assumptions are being made, and in what environment is this happening.
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Give an example of a root definition (Fence painting example)
A system owned and run a householder, to paint a garden fence by hand with a brush, in keeping with the decoration scheme of the property, to make the property look better.
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Give an example of a CATWOE declaration (Fence painting example)
customer: householder
actor: householder
transformation process: unpainted fence à painted fence
world view: amateur painting can enhance appearance
owner: householder
environment: hand painting
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What is a rich picture ?
A rich picture is a diagram, presented in the form of an abstract drawing, that provides an overview of the system.
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Why is it beneficial to draw a rich picture ?
It is beneficial to draw a rich picture, because the ideas are schematized, which may help to understand the complexity of an entire situation and identify the issues.
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