Understanding Data Warehousing in Business Intelligence
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Questions and Answers

What is the primary purpose of a data warehouse?

  • Storing data for backup purposes
  • Running operational systems
  • Facilitating better decision-making through analysis (correct)
  • Selling data to external sources

    • Where does a data warehouse receive data from?

  • Directly from the CEO
  • From marketing departments only
  • Only from external sources
  • Transactional systems, relational databases, and other sources (correct)

    • What does a data warehouse primarily facilitate and support?

  • Business intelligence (BI) analysis (correct)
  • Scientific research
  • Social media activities
  • Food ordering systems

    • What is one key characteristic of data warehouses in terms of the data they contain?

    <p>Large amounts of historical data</p> Signup and view all the answers

    How would you define a data warehouse based on the text provided?

    <p>A collection of organizational data for analysis</p> Signup and view all the answers

    Why are organizations turning to cloud-based technologies in relation to data warehousing?

    <p>For convenient data collection, reporting, and analysis</p> Signup and view all the answers

    What is the main purpose of a data warehouse?

    <p>To provide historical and current data for analysis</p> Signup and view all the answers

    Why is a data warehouse considered subject-oriented?

    <p>Because it focuses on specific topics like sales, promotions, and inventory</p> Signup and view all the answers

    What does it mean that data in a data warehouse is non-volatile?

    <p>Data once entered remains unchanged and read-only</p> Signup and view all the answers

    How does a data warehouse handle time-variant data?

    <p>By documenting data with an element of time, explicitly or implicitly</p> Signup and view all the answers

    Why is it necessary for a data warehouse to be integrated?

    <p>To integrate data from different sources into a consistent format for analysis</p> Signup and view all the answers

    Which of the following would be a typical subject in a subject-oriented data warehouse?

    <p>Product sales performance</p> Signup and view all the answers

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