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Data warehousing

Quiz by A. Kavitha

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10 questions
Show answers
  • Q1
    What is the main purpose of data warehousing?
    To manage system performance
    To consolidate data from multiple sources for analysis and reporting
    To store real-time transaction data
    To create data backups for recovery
    30s
  • Q2
    Which of the following is a characteristic of a data warehouse?
    Operational
    Transaction-oriented
    Volatile
    Subject-oriented
    30s
  • Q3
    What type of data modeling is commonly used in data warehousing?
    Hierarchical model
    Network model
    Star schema
    Flat file model
    30s
  • Q4
    Which tool is often used for Extract, Transform, Load (ETL) processes in data warehousing?
    Adobe Photoshop
    Notepad
    Informatica
    Microsoft Word
    30s
  • Q5
    What is the primary benefit of using a data warehouse?
    Faster internet connectivity
    Improved decision-making through data analysis
    More secure online transactions
    Increased storage capacity for files
    30s
  • Q6
    What is data mining in the context of data warehousing?
    Storing data for backup
    The process of discovering patterns and insights from large datasets
    Cleaning and organizing data
    Transferring data between locations
    30s
  • Q7
    Which of the following best describes a dimension table in a data warehouse?
    A table that stores transactional data
    A table that records user access logs
    A table that maintains system performance metrics
    A table that contains descriptive attributes related to a fact
    30s
  • Q8
    What is the role of a fact table in a data warehouse?
    To display database schemas
    To manage user permissions
    To collect metadata about data sources
    To store quantitative data for analysis
    30s
  • Q9
    What does OLAP stand for in data warehousing?
    Operational Analytical Processing
    Online Analytical Processing
    Online Access Processing
    Ordered Logic Application Processing
    30s
  • Q10
    What is the primary purpose of data staging in a data warehouse?
    To create user interfaces for data access
    To analyze and generate reports
    To archive data for long-term storage
    To prepare data before it is loaded into the warehouse
    30s

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