IFC (IFC4X3_ADD2) under development IfcIdentifier 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). Formal representation

TYPE IfcIdentifier = STRING(255);
END_TYPE; References

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Is this page difficult to understand? Let us know! Changelog IFC4

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