from IAI: The IfcRoot
is the most abstract and root class for all IFC entity definitions that
roots in the kernel or in subsequent layers of the IFC object model. It
is therefore the common supertype all all IFC entities, beside those
defined in an IFC resource schema. All entities that are subtypes of IfcRoot
can be used independently, whereas resource schema entities, that are
not subtypes of IfcRoot,
are not supposed to be independent entities.
assigns the globally unique ID, and the ownership and history
information to the entity. In addition it may provide for a name
and a description about the concepts.
HISTORY New entity
in IFC Release 1.0
|| 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, NOTE: only the
last modification in stored.
|| 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.