#### 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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