A system allocating identifiers to registered objects.
[ISO/IEC 6523-1:1998, definition 3.6]
ICD
The data element used to uniquely identify an organization identification scheme.
[ISO/IEC 6523-1:1998, definition 3.8]
OI
The identifier assigned to an organization within an organization identification scheme, and unique within that scheme.
[ISO/IEC 6523-1:1998, definition 3.10]
domain within a registry in which each item code refers to a single entity
NOTE 1 A code space typically corresponds to one or more classes in a data model.
NOTE 2 In ISO 22745, a different code space is assigned to each concept or concept information element category.
URN
persistent, location-independent, resource identifiers defined by the World Wide Web Consortium in RFC 2141 or its successors