IfcIdentifier

Natural language names

Semantic definitions at the type

Type definition

Definition from ISO/CD 10303-41:1992: An identifier is an alphanumeric string which allows an individual thing to be identified. It may not provide natural-language meaning.

Type: STRING - it should be restricted to max. 255 characters.

NOTE Corresponding STEP name: identifier, please refer to ISO/IS 10303-41:1994 for the final definition of the formal standard.

HISTORY New type in IFC Release 2x.

Formal representations

XSD Specification

 <xs:simpleType name="IfcIdentifier">

  <xs:restriction base="xs:normalizedString"/>

 </xs:simpleType>

 <xs:element name="IfcIdentifier-wrapper" nillable="true">

  <xs:complexType>

   <xs:simpleContent>

    <xs:extension base="ifc:IfcIdentifier">

     <xs:attributeGroup ref="ifc:instanceAttributes"/>

    </xs:extension>

   </xs:simpleContent>

  </xs:complexType>

 </xs:element>

EXPRESS Specification


TYPE IfcIdentifier = STRING;
END_TYPE;


 EXPRESS-G diagram

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