Models provide a way to describe systems as they are now and how we want to change them. Formal methods reduce the probability of misunderstanding. Different types of model are needed at different parts of the project life cycle. Conceptual models differ in detail from implementation-specific models. The early stages use scope statements, storyboards and requirements specification. Examples are provided about Fred and his dog and colorectal cancer referral.
KeywordsModels Graphical models Model-driven architecture Modeling maturity levels CEN TC/251 Reference model Scope statement Storyboard Lifecycle Requirements specification Conceptual design Esther in Jönköping Fred and his dog Technology-specific specification Colorectal cancer referral
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