How is a data warehouse different from a database, a data lake or a BI tool?
It’s a common source of confusion. In simple terms: – Operational databases sit behind your applications and are optimised for fast, transactional reads/writes — not for complex reporting across years of data. – Data warehouses are optimised for analytics — structured, modelled, fast for aggregations and historical reporting. – Data lakes store raw, often unstructured … Read more