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5.1.3.39 IfcRelDefinesByTemplate

5.1.3.39.1 Semantic definition

The objectified relationship IfcRelDefinesByTemplate defines the relationship between a property set template and property sets. Common information about property sets (e.g., the applicable name, description and contained properties) is defined by a property set template and assigned to all relevant property sets.

The IfcRelDefinesByTemplate is a 1-to-N relationship, as it allows one property set template to be assigned to one or many property sets or quantity sets. Those property sets then share the same property set template definition.

5.1.3.39.2 Entity inheritance

5.1.3.39.3 Attributes

# Attribute Type Description
IfcRoot (4)
1 GlobalId IfcGloballyUniqueId

Assignment of a globally unique identifier within the entire software world.

2 OwnerHistory OPTIONAL IfcOwnerHistory

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.

3 Name OPTIONAL IfcLabel

An 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.

4 Description OPTIONAL IfcText

An optional description, provided to exchange informative comments.

Click to show 4 hidden inherited attributes Click to hide 4 inherited attributes
IfcRelDefinesByTemplate (2)
5 RelatedPropertySets SET [1:?] OF IfcPropertySetDefinition

One or many property sets or quantity sets that obtain their definitions from the single property set template.

6 RelatingTemplate IfcPropertySetTemplate

Property set template that provides the common definition of related property sets.

Table A

5.1.3.39.4 Concept usage

Concept Usage Description
IfcRoot (2)
Revision Control General

Ownership, history, and merge state is captured using IfcOwnerHistory.

Software Identity General

IfcRoot assigns the globally unique ID. In addition, it may also provide a name and description for the concept.

Click to show 2 hidden inherited concepts Click to hide 2 inherited concepts
Table B

5.1.3.39.5 Formal representation

ENTITY IfcRelDefinesByTemplate
SUBTYPE OF (IfcRelDefines);
RelatedPropertySets : SET [1:?] OF IfcPropertySetDefinition;
RelatingTemplate : IfcPropertySetTemplate;
END_ENTITY;

5.1.3.39.6 References

Edit on Github

4 contributor(s): ArturTomczakGeert HesselinkDion MoultbSI-Bot
Last change: Typos and small patches in content and entities (#986) * Typos and small patches in content and entities * revert redundant changes * Update docs/schemas/core/IfcKernel/Entities/IfcObjectDefinition.md Co-authored-by: Thomas Krijnen <t.krijnen@gmail.com> * Update docs/schemas/core/IfcKernel/Entities/IfcPropertySetDefinition.md Co-authored-by: Thomas Krijnen <t.krijnen@gmail.com> * Update docs/schemas/core/IfcKernel/Entities/IfcPropertyTemplateDefinition.md Co-authored-by: Thomas Krijnen <t.krijnen@gmail.com> * Update docs/schemas/core/IfcKernel/Entities/IfcRelDeclares.md Co-authored-by: Thomas Krijnen <t.krijnen@gmail.com> * Update docs/schemas/core/IfcKernel/Entities/IfcRelationship.md Co-authored-by: Thomas Krijnen <t.krijnen@gmail.com> --------- Co-authored-by: Thomas Krijnen <t.krijnen@gmail.com> Co-authored-by: ArturTomczak <artomczak@gmail.com> by Geert Hesselink on 2025-09-18T09:21:05+01:00

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5.1.3.39.7 Changelog

5.1.3.39.7.1 IFC4

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