Data Mining and Business Intelligence MCQs with answers Page - 10

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A

Admin • 828.03K Points
Coach

Q. A directory to help the DSS analyst locate the contents of the data warehouse isseen in __________.

  • (A) Current detail data
  • (B) Lightly summarized data
  • (C) Metadata
  • (D) Older detail data

A

Admin • 828.03K Points
Coach

Q. Metadata contains at least__________.

  • (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

A

Admin • 828.03K Points
Coach

Q. Which of the following is not a old detail storage medium?

  • (A) Phot Optical Storage
  • (B) RAID
  • (C) Microfinche
  • (D) Pen drive

A

Admin • 828.03K Points
Coach

Q. The data from the operational environment enter_____________of data warehouse.

  • (A) Current detail data
  • (B) Older detail data
  • (C) Lightly summarized data
  • (D) Highly summarized data

A

Admin • 828.03K Points
Coach

Q. The data in current detail level resides till__________event occurs.

  • (A) Purge
  • (B) Summarization
  • (C) Archieve
  • (D) D All of the above

A

Admin • 828.03K Points
Coach

Q. The dimension tables describe the __________.

  • (A) Entities
  • (B) Facts
  • (C) Keys
  • (D) Units of measures

A

Admin • 828.03K Points
Coach

Q. The granularity of the fact is the ___________ of detail at which it is recorded.

  • (A) Transformation
  • (B) Summarization
  • (C) Level
  • (D) Tr

A

Admin • 828.03K Points
Coach

Q. Which of the following is not a primary grain in analytical modeling.

  • (A) Transaction
  • (B) Periodic snapshot
  • (C) Accumulating snapshot
  • (D) All of the above

A

Admin • 828.03K Points
Coach

Q. Granularity is determined by___________.

  • (A) Number of parts to a key
  • (B) Granularity of those parts
  • (C) Both A and B
  • (D) None of the above

A

Admin • 828.03K Points
Coach

Q. ________of data means that the attributes within a given entity are fully dependent on the entire primary key of the entity.

  • (A) Additively
  • (B) Granularity
  • (C) Functional dependency
  • (D) Dimensionality

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