Natural language names
Definition der Merkmal Vorlagen (allgemein)
Property Template Definition
Définition de modèle de propriété
Change log
IFC2x3 to IFC4
Semantic definitions at the entity
Entity definition

IfcPropertyTemplateDefinition is a generalization of all property and property set templates. Templates define the collection, types, names, applicable measure types and units of individual properties used in a project. The property template definition can be either:

The subtypes of IfcPropertyTemplateDefinition are declared within a project context. The uppermost template definition (e.g. the IfcPropertySetTemplate including several IfcPropertyTemplate's) should be related to the context, either IfcProject, or IfcProjectLibrary, using the inherited HasContext inverse attribute.

HISTORY  New entity in IFC4.
Inherited definitions from supertypes
Entity inheritance IfcPropertySetTemplate IfcPropertyTemplate IfcPropertyDefinition IfcRoot
Attribute inheritance
1GlobalIdIfcGloballyUniqueId Assignment of a globally unique identifier within the entire software world. X
2OwnerHistoryIfcOwnerHistory? 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 - either as addition, deletion or modification.
IFC4 CHANGE  The attribute has been changed to be OPTIONAL.
3NameIfcLabel? 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. X
4DescriptionIfcText? Optional description, provided for exchanging informative comments.X
S[0:?]Reference to the relationship IfcRelAssociates and thus to those externally defined concepts, like classifications, documents, or library information, which are associated to the property definition.X
Definitions applying to General Usage

Concept inheritance

#ConceptTemplateModel View
IdentitySoftware IdentityGeneral Usage
Revision ControlRevision ControlGeneral Usage
Formal representations
XML Specification
 <xs:element name="IfcPropertyTemplateDefinition" type="ifc:IfcPropertyTemplateDefinition" abstract="true" substitutionGroup="ifc:IfcPropertyDefinition" nillable="true"/>
 <xs:complexType name="IfcPropertyTemplateDefinition" abstract="true">
   <xs:extension base="ifc:IfcPropertyDefinition"/>
EXPRESS Specification
ENTITY IfcPropertyTemplateDefinition
 ABSTRACT SUPERTYPE OF(ONEOF(IfcPropertySetTemplate, IfcPropertyTemplate))
 SUBTYPE OF (IfcPropertyDefinition);

Link to EXPRESS-G diagram EXPRESS-G diagram

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