#### 8.14.3.3 IfcPropertyAbstraction

| Propriété abstraite
| Merkmal - Abstraktion

The IfcPropertyAbstraction is an abstract supertype of all property related entities defined as dependent resource entities within the specification. It may have an external reference to a dictionary or library that provides additional information about its definition. Instantiable subtypes have property name, value and other instance information.

> HISTORY New entity in IFC4.

XSD Specification:

<xs:element name="IfcPropertyAbstraction" type="ifc:IfcPropertyAbstraction" abstract="true" substitutionGroup="ifc:Entity" nillable="true"/>
<xs:complexType name="IfcPropertyAbstraction" abstract="true">
<xs:complexContent>
<xs:extension base="ifc:Entity"/>
</xs:complexContent>
</xs:complexType>

EXPRESS Specification:

ENTITY IfcPropertyAbstraction

| ABSTRACT SUPERTYPE OF(ONEOF(IfcExtendedProperties, IfcProperty));

| INVERSE

END_ENTITY;

Attribute Definitions:

Inheritance Graph:

ENTITY IfcPropertyAbstraction

| ENTITY IfcPropertyAbstraction

| INVERSE

END_ENTITY;

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