From Open Risk Manual


Identifier. Sequence of characters, capable of uniquely identifying that with which it is associated, within a specified context. A character string to identify and distinguish uniquely, one instance of an object in an identification scheme from all other objects in the same scheme together with relevant supplementary information.


  • ISO/IEC 11179-3 Information technology - Metadata registries (MDR) - Part 3: Registry metamodel and basic attributes, Third edition, 2013-02-15