Data Mining and Business Intelligence MCQs with answers Page - 5

Here, you will find a collection of MCQ questions on Data Mining and Business Intelligence. Go through these questions to enhance your preparation for upcoming examinations and interviews.

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A

Admin • 828.03K Points
Coach

Q. The type of relationship in star schema is_________.

  • (A) Many-to-many
  • (B) One-to-one
  • (C) One-to-many
  • (D) Many-to-one

A

Admin • 828.03K Points
Coach

Q. Fact tables are_______.

  • (A) Completely demoralized
  • (B) Partially demoralized
  • (C) Completely normalize
  • (D) D Partially normalized

A

Admin • 828.03K Points
Coach

Q. ____________is the goal of data mining.

  • (A) To explain some observed event or condition
  • (B) To confirm that data exists
  • (C) To analyze data for expected relationships
  • (D) To create a new data warehouse

A

Admin • 828.03K Points
Coach

Q. Business Intelligence and data warehousing is used for________.

  • (A) Forecasting
  • (B) Data Mining
  • (C) Analysis of large volumes of product sales data
  • (D) All of the above

A

Admin • 828.03K Points
Coach

Q. The data administration subsystem helps you perform all of the following, except_________.

  • (A) Backups and recovery
  • (B) Query optimization
  • (C) Security management
  • (D) Create, change, and delete information

A

Admin • 828.03K Points
Coach

Q. The most common source of change data in refreshing a data warehouse is__________.

  • (A) Query able change data
  • (B) Cooperative change data
  • (C) Logged change data
  • (D) Snapshot change data

A

Admin • 828.03K Points
Coach

Q. ___________are responsible for running queries and reports against data warehouse tables.

  • (A) Hardware
  • (B) Software
  • (C) End users
  • (D) Middle ware

A

Admin • 828.03K Points
Coach

Q. Query tool is meant for_________.

  • (A) Data acquisition
  • (B) Information delivery
  • (C) Information exchange
  • (D) Communication

A

Admin • 828.03K Points
Coach

Q. Classification rules are extracted from____________.

  • (A) Root node
  • (B) Decision tree
  • (C) Siblings
  • (D) Branches

A

Admin • 828.03K Points
Coach

Q. Dimensionality reduction reduces the data set size by removing_____________.

  • (A) Relevant attributes
  • (B) Irrelevant attributes
  • (C) Derived attributes
  • (D) Composite attributes

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