Registreeringuid

Registreeringuid is a term used to describe a unique identifier assigned to a registration record within a data management system. It provides a stable, unambiguous reference that enables data to be linked, retrieved and audited across applications and databases. In practice, the registreeringuid is an internal key that remains associated with a specific registration entry, independently of changes to names, contact details or user accounts.

Key properties include uniqueness, immutability and non-sensitivity to personal data. It is typically created at the moment a registration is stored and is intended to persist for the lifetime of the record. The value is usually generated by the system rather than derived from other data, and may be formatted as a string.

Common formats are UUIDs or GUIDs, though the exact representation depends on the platform. A registreeringuid is primarily used to join records across tables, systems and services, to prevent duplication, and to support auditing and change tracking without exposing sensitive information.

Governance considerations include ensuring the identifier is never reassigned, providing stable mappings when records are merged or split, and controlling access to systems that can resolve the identifier to personal data. Privacy-by-design practices encourage separating identifiers from directly identifying information and logging access to the mapping.

Typical domains of use include civil or governmental registries, product or service registrations, event enrollments, and enterprise data management where multiple systems must refer to the same registration entry.