Data Mining and Data Warehouse MCQs with answers Page - 9

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Admin • 828.03K Points
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Q. Data marts that incorporate data mining tools to extract sets of data are called ______.

  • (A) independent data mart.
  • (B) dependent data marts.
  • (C) intra-entry data mart.
  • (D) inter-entry data mart.

A

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Q. ____________ can generate programs itself, enabling it to carry out new tasks.

  • (A) automated system.
  • (B) decision making system.
  • (C) self-learning system.
  • (D) productivity system.

A

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Q. The power of self-learning system lies in __________.

  • (A) cost.
  • (B) speed.
  • (C) accuracy.
  • (D) simplicity.

A

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Q. Building the informational database is done with the help of _______.

  • (A) transformation or propagation tools.
  • (B) transformation tools only.
  • (C) propagation tools only.
  • (D) extraction tools.

A

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Q. How many components are there in a data warehouse?

  • (A) two.
  • (B) three.
  • (C) four.
  • (D) five.

A

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Q. Which of the following is not a component of a data warehouse?

  • (A) metadata.
  • (B) current detail data.
  • (C) lightly summarized data.
  • (D) component key.

A

Admin • 828.03K Points
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Q. ________ is data that is distilled from the low level of detail found at the current detailed leve.

  • (A) highly summarized data.
  • (B) lightly summarized data.
  • (C) metadata.
  • (D) older detail data.

A

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Q. Highly summarized data is _______.

  • (A) compact and easily accessible.
  • (B) compact and expensive.
  • (C) compact and hardly accessible.
  • (D) compact.

A

Admin • 828.03K Points
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Q. A directory to help the DSS analyst locate the contents of the data warehouse is seen in ______.

  • (A) current detail data.
  • (B) lightly summarized data.
  • (C) metadata.
  • (D) older detail data.

A

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Q. Metadata contains atleast _________.

  • (A) the structure of the data.
  • (B) the algorithms used for summarization.
  • (C) the mapping from the operational environment to the data warehouse.
  • (D) all of the above.

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