IFC 4.3.0.1 (IFC4X3_TC1)

8.11.2.30 IfcIdentifier

8.11.2.30.1 Semantic definition

An identifier is an alphanumeric string which allows an individual thing to be identified. It may not provide natural-language meaning.

Type: STRING of up to 255 characters

Value restrictions

As a merely machine-readable string for identification purposes, an identifier is usually machine-generated and locale-independent (in contrast to human-readable labels, IfcLabel).

8.11.2.30.2 Formal representation

TYPE IfcIdentifier = STRING(255);
END_TYPE;

8.11.2.30.3 References

8.11.2.30.4 Changelog

8.11.2.30.4.1 IFC4

  • type, Changed from "string" to "string (255)"