Re: Archetypes vs Stereotypes

John Carter wrote:
Question: Is the "Role" Wirfs-Brock's "Role Stereotypes" sub-categories
of the "Roles" Archetype of Coad?

I'm quite familiar with Coad's archetypes, but not with Wirfs-Brock's
stereotypes. I see that she's already given her answer, so here's mine.

Coad's archetypes are applicable at the business domain object layer.
They show how to model persistent business data and the way that they
interrelate and interact, and how to expose data services to whatever
applications might need them. They primarily characterize data, with
some associated behavior.

Wirfs-Brock's stereotypes seem to be applicable at the application
layer. They show how to categorize non-persistent classes. They
primarily characterize behavior, with some associated data.

Once you understand the distinction between the domain layer and the
application layer, it becomes more more obvious. The appropriate design
and implementation techniques for the two layers are quite different.

.

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