erisätteid

Erisätteid is a term used in information technology to denote distinct identifiers assigned to individual records or entities to enable unambiguous reference across systems or datasets. In practice, an erisätteid is intended to remain stable over time, even as other attributes of the record may change, and to support reliable linking of data from multiple sources without exposing sensitive source keys.

Identifiers that fall under the concept of erisätteid can take several forms. Common types include surrogate keys, which are internal sequential or generated values; universally unique identifiers (UUIDs); and cryptographic hashes or tokens derived from underlying data. The choice of form depends on requirements for stability, collision resistance, privacy, and interoperability with external systems. In some contexts, erisätteid may be designed to enable privacy-preserving data sharing through pseudonymization or tokenization, limiting the ability to reverse-engineer the original identifiers.

Erisätteid are used in data integration, master data management, customer data platforms, and health informatics, where consistent references across datasets are essential for deduplication, record linkage, and analytics. They support data quality by reducing ambiguity and by enabling consistent joins and lookups across heterogeneous data stores.

Benefits of using erisätteid include improved data integrity, easier cross-system analytics, and greater flexibility in data governance. Limitations can include the need for robust key management, potential privacy concerns, and the overhead of maintaining mapping between erisätteid and source identifiers. Proper governance, documentation, and alignment with privacy regulations are important when implementing erisätteid.

See also: surrogate key, primary key, UUID, tokenization, pseudonymization.