Data Warehousing MCQ Questions and Answers Quiz

21. __________ is the heart of the warehouse.

  1. Data mining database servers.
  2. Data warehouse database servers.
  3. Data mart database servers.
  4. Relational data base servers.

22. Reconciled data is

  1. data stored in the various operational systems throughout the organization.
  2. current data intended to be the single source for all decision supportsystems.
  3. data stored in one operational system in the organization.
  4. data that has been selected and formatted for end-user support applications.

23. ____________predicts future trends & behaviors, allowing business managers to make proactive,knowledge-driven decisions.

  1. Data warehouse.
  2. Data mining.
  3. Datamarts.
  4. Metadata.

24. Data can be updated in _____environment.

  1. data warehouse.
  2. data mining.
  3. operational.
  4. informational.

25. Expansion for DSS in DW is

  1. Decision Support system.
  2. Decision Single System.
  3. Data Storable System.
  4. Data Support System.

26. A snowflake schema is which of the following types of tables?

  1. Fact
  2. Dimension
  3. Helper
  4. All of the above

27. Business Intelligence and data warehousing is used for

  1. Forecasting.
  2. Data Mining.
  3. Analysis of large volumes of product sales data.
  4. All of the above.

28. Which of the following is not a kind of data warehouse application?

  1. Information processing
  2. Analytical processing
  3. Data mining
  4. Transaction processing

29. ______________databases are owned by particular departments or business groups.

  1. Informational.
  2. Operational.
  3. Both informational and operational.
  4. Flat.

30. The type of relationship in star schema is

  1. many to many
  2. one to one
  3. one to many
  4. many to one
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