perustunnus
Perustunnus is a Finnish term used in information management to denote a core, unique identifier assigned to an entity within a data system. It functions as a primary key that enables unambiguous reference and linking of records across datasets, supporting data integration and cross-system queries. The exact meaning and use of a perustunnus vary by system and organization; it is not a universally standardized identifier, but a design construct within a particular data model or register.
In Finnish public administration and in various information systems, perustunnus may be used for different entity
Relation to other identifiers: Finland uses several well-known identifiers such as henkilötunnus (personal identity number), Y-tunnus
Implementation and governance considerations include ensuring uniqueness, defining the lifecycle and change management of the identifier,
See also: unique identifiers, data governance, data integration, kiinteistötunnus, henkilötunnus, Y-tunnus.