Data engineering·Governance, privacy and meaning
a person asks to be deleted and you have to find them in the warehouse, the lake, every backup and last quarter's exports.
Right to erasure
Also calledright to be forgotten, deletion request, DSAR deletion
A person's legal right to have their personal data removed, which a data platform must be able to honour within a deadline. It is architecturally awkward because analytical storage is built to be append-only and immutable, so the answer is usually a combination of pseudonymisation, key deletion and targeted rewrites. Snapshot retention and time travel are the parts most often forgotten, since a deleted row remains readable in an old snapshot until it expires.