Re: Need example of a River class being used as an individual ... anyone?

Is it possible to define in OWL a class that is a subclass of X and at 
the same time is an instance of Y?

The following example aims at clarifying the use of this. Let us assume 
we have the class Substance, and its subclasses Mixture, 
MolecularViewSubstance (a substance as seen from a molecular point of view).

Then SodiumChloride, Water and Aspirin are all defined as instances of 
MolecularViewSubstance but
also as subclasses of of Substance (Aspiring is actually defined as a 
subclass of Mixture).

We define a certain class Brine as a subclass of Mixture but also as an 
instance of MolecularViewSubstance, that specifies that the substances 
Water and SodiumChloride are components of Brine.

We can also specify an instance of a certain mixture that is simply an 
instance of Mixture, with specific values of concentration of the 
components, etc.

We can also define the instance MyVeryOwnBrine that is an instance of 
Brine that specifies a specific concentraion of SodiumChloride in Water.

Received on Monday, 10 March 2003 20:13:42 UTC