What Is The Difference Between Data Warehouse And Operational Systems?

Question

Accepted Answer

Data warehouse is a repository of historical data while operational systems are used for day-to-day operations.

Operational systems are used for transactional processing while data warehouses are used for analytical processing.
Data warehouses are designed for querying and reporting while operational systems are designed for data entry and retrieval.
Operational systems are optimized for performance while data warehouses are optimized for query performance.
Data warehouses integrate data from multiple sources while operational systems are focused on specific business processes.
Examples of operational systems include CRM, ERP, and SCM while examples of data warehouses include Amazon Redshift and Google BigQuery.

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