Many regulated industries require that data is persevered in a tamperproof way.
- Financial Service SEC-17a-4 http://www.17a-4.com/regulations-summary/
- Healthcare HIPPA https://www.hhs.gov/hipaa/for-professionals/security/laws-regulations/
- Blockchain https://www.bbva.com/en/news/economy/financial-and-commercial-services/fintech/7-regulatory-challenges-facing-blockchain/
This could be applied to the current version of the data and/or to historic versions of the data (e.g. via a Temporal query).
Provide a mechanism that ensures the preservation of data, with the controls to manage access and privileges (e.g. drop / truncate etc.). This requires a full spec - this is not intended to be that spec, but a placeholder for prioritization etc.