small OCL query



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Leonor Barroca (l.barroca@open.ac.uk)
Tue, 27 Mar 2001 11:24:56 +0100


Am I right in thinking that in OCL if a navigation expression X results in an empty set then any navigation expression of the type X.a (X followed by some other role name) will also result in an empty set? Also, that in OCL comparing an empty set with an object of some type will result in false? Thanks Leonor Barroca


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