19. Creating Models
WE WROTE THIS CHAPTER for people who have been put off modeling by the perception that it involves creating a multitude of diagrams which must each conform rigidly to some cryptic standard. Accordingly, we start by encouraging you to sketch out your ideas as free-form drawings which pay scant attention to formal conventions. We then introduce a minimal subset of the Unified Modeling Language (UML) by describing two types of diagrams that cover most of your modeling needs: the Class diagram and the Sequence diagram. After reviewing some tools that might help you create such diagrams, we conclude the chapter with a set of tips for producing better model diagrams.
Free-form Diagrams
Models that are represented by free-form ...
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