Data Warehousing – General Questions

11. The load and index is which of the following?

A. A process to reject data from the data warehouse and to create the necessary indexes
B. A process to load the data in the data warehouse and to create the necessary indexes
C. A process to upgrade the quality of data after it is moved into a data warehouse
D. A process to upgrade the quality of data before it is moved into a data warehouse

Correct Answer:  B. A process to load the data in the data warehouse and to create the necessary indexes

12. The extract process is which of the following?

A. Capturing all of the data contained in various operational systems
B. Capturing a subset of the data contained in various operational systems
C. Capturing all of the data contained in various decision support systems
D. Capturing a subset of the data contained in various decision support systems

Correct Answer:  B. Capturing a subset of the data contained in various operational systems

13. A star schema has what type of relationship between a dimension and fact table?

A. Many-to-many
B. One-to-one
C. One-to-many
D. All of the above.

Correct Answer:  C. One-to-many

14. Transient data is which of the following?

A. Data in which changes to existing records cause the previous version of the records to be eliminated
B. Data in which changes to existing records do not cause the previous version of the records to be eliminated
C. Data that are never altered or deleted once they have been added
D. Data that are never deleted once they have been added

Correct Answer:  A. Data in which changes to existing records cause the previous version of the records to be eliminated

15. A multifield transformation does which of the following?

A. Converts data from one field into multiple fields
B. Converts data from multiple fields into one field
C. Converts data from multiple fields into multiple fields
D. All of the above

Correct Answer: D. All of the above

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