Derived data is a copy of data from a source of truth, for data keeping or storing it’s redundant, yet it can have many purposes.
Purpose examples
- Caching
- Analytical data system
- Lowering the latency on queries for high query demand
- Backups
Reference
Kleppmann, Martin, and Chris Riccomini. Designing Data-Intensive Applications: The Big Ideas behind Reliable, Scalable, and Maintainable Systems. Second Edition, O’Reilly Media, 2026.