ABSTRACT This definition may not be instantiated
A generic and abstract relationship which subtypes are used to:
- assign a object type to an object occurrence
- assign a property set to an object instance
- assign a property set template to a property set
Assignment of a globally unique identifier within the entire software world.
Assignment of the information about the current ownership of that object, including owning actor, application, local identification and information captured about the recent changes of the object,
Optional name for use by the participating software systems or users. For some subtypes of IfcRoot the insertion of the Name attribute may be required. This would be enforced by a where rule.
Optional description, provided for exchanging informative comments.
Ownership, history, and merge state is captured using IfcOwnerHistory.
IfcRoot assigns the globally unique ID. In addition it may provide for a name and a description about the concept.
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ENTITY IfcRelDefines ABSTRACT SUPERTYPE OF (ONEOF (IfcRelDefinesByObject ,IfcRelDefinesByProperties ,IfcRelDefinesByTemplate ,IfcRelDefinesByType)) SUBTYPE OF (IfcRelationship); END_ENTITY;