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{\LARGE\bf \sf Software Engineering} \\
\vspace{0.15in} {\Large\bf \sf CSE470 \hspace*{4.0truein} Fall 2001} \\
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{\Large \bf \sf Homework 4 \hspace*{3.3truein} Due: 9/28/2001}
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\begin{enumerate}
\item A UML class diagram can be used to model UML itself by
considering each graphical component to be a class. For example, a
\textbf{Model} is a collection of \textbf{Class}. We could depict
this as follows:
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Construct and draw a class model showing the following UML
components:\\ \textit{Model, Class, Association, State diagram,
Transition, Composite state, Simple state} (a simple state is a state
that contains no other states). In addition to the model, include a
written explanation of the model. You may add more classes if you think
it's required. Think carefully about where the state diagram fits in
the model and what must be present in the model to have a state
diagram.

Hint: Make Composite state and Simple state the subclasses of a
superclass called ``State Vertex''.

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