Re: LANG: compliance levels

I strongly support Mike Dean's remarks on local domain/range constraints
and cardinality. Both are so commonly used in ER and O-O data models
that it would be very weird if OWL would not support that at Level 1. 

I should add that "ease/frequency of use" is for me the prime criterion
for putting a language feature in Level 1, and not whether the feature
is difficult to implement in a DL reasoner (not saying this is the
case).  

Guus

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