buildingSMART / buildingSMART/IFC4.x-development
Semantic meaning of cardinality of IfcPropertySet association
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allocated
allocated-core
ifc-update-out
- Dominant language
- Python
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Description
IfcPropertySet.DefinesOccurrence is defined as SET [0:?] OF [IfcRelDefinesByProperties](http://localhost:5000/IFC/RELEASE/IFC4x3/HTML/lexical/IfcRelDefinesByProperties.htm) FOR RelatingPropertyDefinition
Scenario 1:
IfcWallX <- IfcRelDefinesByProperties -> IfcPropertySetX
IfcSlabX <- IfcRelDefinesByProperties -> IfcPropertySetX
Scenario 2:
IfcWallX, IfcSlabX <- IfcRelDefinesByProperties -> IfcPropertySetX
What's the difference between the two scenarios?
If SET [0:?] were changed to SET [0:1] then that would enforce scenario 2, which seems a bit cleaner to me.
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