The Goodys Example
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Students
are already familiar with Goodys, they have all used its
services and have an understanding of its structure and behaviour.
Goodys and Olga
Square Goodys (OSG), are both identifiers of entities (objects).
The
first one is used to identify a conceptual object (a type) that
defines the structure and behaviour of Goodys restaurants.
The
second one identifies a specific real-world object (an instance) that
one located in Olga Square (see figure 1), whose structure and
behaviour is specified by the first one.
Students
have a clear understanding of the concept of type and instance and
they are only required to learn the terms used to refer to them.
See
OO Conceptual model for
a detail description. |