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Data warehousing

Quiz by Piyush Singh

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11 questions
Show answers
  • Q1
    What is the primary purpose of a data warehouse?
    To store transactional data
    To provide real-time processing
    To manage database connections
    To support business intelligence activities
    30s
  • Q2
    Which of the following is a common architecture model used in data warehousing?
    Star Schema
    Relational Schema
    Flat File Structure
    Nested Schema
    30s
  • Q3
    What is ETL in the context of data warehousing?
    Extract, Transform, Load
    Encode, Transfer, Log
    Extract, Transfer, Load
    Evaluate, Test, Launch
    30s
  • Q4
    What type of data is typically stored in a data warehouse?
    Temporary data
    Only structured data
    Historical data
    Real-time transactional data
    30s
  • Q5
    What is a key benefit of using a data warehouse for analytics?
    Random access to unstructured data
    Increased data storage costs
    Faster online transaction processing
    Improved data quality and consistency
    30s
  • Q6
    Which of the following best describes a Dimension table in a data warehouse?
    A table that stores transactional records
    A table that holds summary data
    A table that contains descriptive attributes related to facts
    A table that contains indexes for data retrieval
    30s
  • Q7
    What does the term 'fact table' refer to in a data warehouse?
    A table that stores data in its raw form
    A table that holds metadata information
    A table that contains non-numerical data attributes
    A table that contains quantitative data for analysis
    30s
  • Q8
    Which of the following is a benefit of using data warehouses instead of traditional databases?
    Faster transaction processing
    Lower storage costs
    Simpler data structure
    Enhanced analytical capabilities
    30s
  • Q9
    What role does a data mart play in data warehousing?
    It serves a specific business line or department
    It is a backup storage for data warehouses
    It integrates data from multiple organizations
    It is the primary data storage for operational systems
    30s
  • Q10
    What is the purpose of data normalization in a data warehouse?
    To speed up transaction times
    To increase data storage size
    To eliminate redundancy and ensure data integrity
    To create more data duplicates
    30s
  • Q11
    What is the primary purpose of a data warehouse?
    To store real-time transaction data
    To enable efficient data analysis and reporting
    To serve as a backup for databases
    To facilitate online transaction processing
    30s

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