Câu 59: DMF: Data Management Fundamentals

One of the key differences between operational systems and data warehouses is:

1. A. Operational systems focus on business processes; data warehouses focus on business strategies
2. B. Operational systems focus on historical data; data warehouses contain current data
3. C. Operational systems are available 24x7; data warehouses are available during business hours
4. D. Operational systems focus on data quality; data warehouses focus on data security
5. E. Operational systems focus on current data; data warehouses contain historical data — đáp án hiện tại