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MCQs

Total Questions : 30 | Page 2 of 3 pages
Question 11. The extract process is which of the following?
  1.    Capturing all of the data contained in various operational systems
  2.    Capturing a subset of the data contained in various decision support systems
  3.    Capturing all of the data contained in various decision support systems
  4.    Capturing a subset of the data contained in various operational systems
 Discuss Question
Answer: Option D. -> Capturing a subset of the data contained in various operational systems
Question 12. A star schema has what type of relationship between a dimension and fact table?
  1.    One-to-many
  2.    Many-to-many
  3.    One-to-one
  4.    All of these
 Discuss Question
Answer: Option A. -> One-to-many
Question 13. The load and index is which of the following?
  1.    A process to upgrade the quality of data before it is moved into a data warehouse
  2.    A process to upgrade the quality of data after it is moved into a data warehouse
  3.    A process to reject data from the data warehouse and to create the necessary indexes
  4.    A process to load the data in the data warehouse and to create the necessary indexes
 Discuss Question
Answer: Option D. -> A process to load the data in the data warehouse and to create the necessary indexes
Question 14. A multifield transformation does which of the following?
  1.    All of these
  2.    Converts data from multiple fields into one field
  3.    Converts data from one field into multiple fields
  4.    Converts data from multiple fields into multiple fields
 Discuss Question
Answer: Option A. -> All of these
Question 15. Transient data is which of the following?
  1.    Data that are never altered or deleted once they have been added
  2.    Data in which changes to existing records cause the previous version of the records to be eliminated
  3.    Data in which changes to existing records do not cause the previous version of the records to be eliminated
  4.    Data that are never deleted once they have been added
 Discuss Question
Answer: Option B. -> Data in which changes to existing records cause the previous version of the records to be eliminated
Question 16. A data mart is designed to optimize the performance for well-defined and predicable uses.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 17. Successful data warehousing requires that a formal program in total quality management (TQM) be implemented.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 18. Data in operational systems are typically fragmented and inconsistent.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 19. Most operational systems are based on the use of transient data.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 20. Independent data marts are often created because an organization focuses on a series of short-term business objectives.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True

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