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6. Joining is the process of partitioning data according to predefined criteria.

A. True
B. False

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7. The role of the ETL process is to identify erroneous data and to fix them.

A. True
B. False

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8. Data in the data warehouse are loaded and refreshed from operational systems.

A. True
B. False

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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

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10. Periodic data are data that are physically altered once added to the store.

A. True
B. False

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