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[protege-owl] overwriting inherited conditions in owl

Antonio Toral antonio.toral at
Thu Apr 26 03:57:01 PDT 2007


I'm using Protege 3.2.1. with the OWL plugin to model an OWL ontology. I have 
a problem regarding intherited conditions. Although I've looked for it in the 
archive of the list I haven't found any message with a related topic. I'll 
try to explain it with a simple example:

Let's say I have an ontology with the following elements:
- Classes A and B (B is a subclass of A)
- ObjectProperty p

I'd like A to have one and only one p (max 1 & min 1 for A) and so I apply two 
restrictions to A:
- p mincardinality 1
- p maxcardinality 1

I'd like B to have at least one p (min 1 for B) but B inherits from A:
- p mincardinality 1
- p maxcardinality 1

p minc. 1 is ok but I'd like to overwrite p maxc. 1. So far I've only come up 
with the solution of writing a new maxcardinality restriction to B such as:
- p maxcardinality 100000 (so this new maxc. overwrites the inherited maxc. 1)

however, what I'd like is not to have any maxcardinality at all for B! is that 

thanks in advance!

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