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  • Question

  • Data scrubbing is which of the following?


  • Options
  • 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
  • A process to upgrade the quality of data before it is moved into a data warehouse 

    • More questions

    • 1. ADO.NET provides the ability to create and process in-memory databases called:

    • Options
    • A. views.
    • B. relations.
    • C. tables.
    • D. datasets.
      • Discuss
    • 2. A load-balancing approach where requests to one IP address are distributed among the multiple servers hosting the Website at the TCP/IP routing level is DNS (domain name server) balancing.

    • Options
    • A. True
    • B. False
      • Discuss
    • 3. Virus detection is a problem with encrypted messages, because the virus may not be detectable until the message is unencrypted.

    • Options
    • A. True
    • B. False
      • Discuss
    • 4. When mapping a multivalued attribute into a relation which of the following is true?

    • Options
    • A. One relation is created.
    • B. Two relations are created.
    • C. Three relations are created.
    • D. Four relations are created.
      • Discuss
    • 5. Which of the following data constraints would be used to specify that the value of cells in a column must be one of a specific set of possible values?

    • Options
    • A. A domain constraint
    • B. A range constraint
    • C. An intrarelation constraint
    • D. An interrelation constraint
      • Discuss
    • 6. An ACID transaction is one that is atomic, consistent isolated, and durable.

    • Options
    • A. True
    • B. False
      • Discuss
    • 7. The fastest read/write time and most efficient data storage of any disk array type is:

    • Options
    • A. RAID-0.
    • B. RAID-1.
    • C. RAID-2.
    • D. RAID-3.
      • Discuss
    • 8. Both status data and event data can be stored in a database.

    • Options
    • A. True
    • B. False
      • Discuss
    • 9. Formatting the report is part of authoring a report.

    • Options
    • A. True
    • B. False
      • Discuss
    • 10. A foreign key may be null and still adhere to the referential integrity constraint.

    • Options
    • A. True
    • B. False
      • Discuss

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