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CSE :: Database System 2 - CS

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

  2. 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


  3. The extract process is which of the following?

  4. 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


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

  6. A.

     Many-to-many

    B.

     One-to-one

    C.

     One-to-many

    D.

     All of the above


  7. Transient data is which of the following?

  8. 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


  9. A multifield transformation does which of the following?

  10. 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


  11. A data mart is designed to optimize the performance for well-defined and predicable uses.

  12. A.

     True

    B.

     False


  13. Successful data warehousing requires that a formal program in total quality management (TQM) be implemented.

  14. A.

     True

    B.

     False


  15. Data in operational systems are typically fragmented and inconsistent.

  16. A.

     True

    B.

     False


  17. Most operational systems are based on the use of transient data.

  18. A.

     True

    B.

     False


  19. Independent data marts are often created because an organization focuses on a series of short-term business objectives.

  20. A.

     True

    B.

     False