ObjectProperty has
both domains: class (to which the property is connected) and range (the possible
values of the property). In each class we can indicate ???restrictions??? that
define constraints.
???. Individuals. Individuals are objects with the characteristics defined by classes
and properties. Both classes and properties may have individuals.
Pa ano and Gu do
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What.is.Metamodel?
The metamodel idea was born about 10 years ago and the interest around it is
increasing. A metamodel can be defined as a language to describe a model, so, to
create a metamodel it is important to work in an abstract level. Metamodel allows
us to describe a well-defined methodology, so, starting from the metamodel, it will
be possible to define a model: metamodel provide, in a few words, guidelines for
model definition.
The introduction of the metamodel idea has brought forth the introduction of metacase
tools. Standard case tools support a fixed notation hard coded in tools: A change
in the methodology requires a change in the code of the tool and this fact requires
high costs and a lot of time.
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