6. Joining is the process of partitioning data according to predefined criteria.
A. True
B. False
7. The role of the ETL process is to identify erroneous data and to fix them.
A. True
B. False
8. Data in the data warehouse are loaded and refreshed from operational systems.
A. True
B. False
9. Star schema is suited to online transaction processing, and therefore is generally used in operational systems, operational data stores, or an EDW.
A. True
B. False
10. Periodic data are data that are physically altered once added to the store.
A. True
B. False