Data Warehousing and Data Mining Quiz
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Questions and Answers

What is the key difference between data in a data warehouse and data in the operational environment?

  • Data in the warehouse is organized for day-to-day operations, analysis, and reporting (correct)
  • Data in the warehouse is unorganized and difficult to access
  • Data in the operational environment is structured for long-term storage and historical analysis
  • Data in the operational environment is clustered to facilitate business insights and forecasts

    • What is the main purpose of data warehousing?

  • To manage data for day-to-day operations and reporting
  • To analyze data and generate forecasts based on the trends over time
  • To serve as the primary database for operational business systems
  • To collect, organize, and manage data from different sources to provide meaningful business insights (correct)

    • What is the primary goal of mapping the data warehouse to a multiprocessor architecture?

  • To enhance real-time transaction processing capabilities
  • To reduce the storage space required for the data warehouse
  • To improve query performance and scalability (correct)
  • To simplify the process of data extraction and transformation

    • What function does a data warehouse serve in today's business environment?

    <p>Enabling reliable reporting and analysis of large volumes of data</p> Signup and view all the answers

    What is the role of metadata in a data warehouse?

    <p>It provides information about the structure and meaning of the data</p> Signup and view all the answers

    How does data warehousing contribute to business decision-making?

    <p>By providing meaningful business insights based on trends over time</p> Signup and view all the answers

    What is the foundation of the data warehousing environment?

    <p>Data warehouse database</p> Signup and view all the answers

    Which components are mainly used for performing conversions, summarizations, and all the changes needed to transform data into a unified format in the data warehouse?

    <p>Sourcing, acquisition, clean-up and transformation tools</p> Signup and view all the answers

    What are the challenges that the Extract, Transform, and Load (ETL) tools have to deal with?

    <p>Database and data heterogeneity</p> Signup and view all the answers

    What functionality does the Extract, Transform and Load (ETL) Tools include?

    <p>All of the above</p> Signup and view all the answers

    Which type of database is used to overcome limitations placed because of the relational Data Warehouse Models?

    <p>Multidimensional databases (MDDBs)</p> Signup and view all the answers

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