Data Warehousing - Study Mode
[#21] Joining is the process of partitioning data according to predefined criteria.
Correct Answer
(B) False
[#22] The role of the ETL process is to identify erroneous data and to fix them.
Correct Answer
(B) False
[#23] Data in the data warehouse are loaded and refreshed from operational systems.
Correct Answer
(A) True
[#24] Star schema is suited to online transaction processing, and therefore is generally used in operational systems, operational data stores, or an EDW.
Correct Answer
(B) False
[#25] Periodic data are data that are physically altered once added to the store.
Correct Answer
(B) False