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Data Visualisation: Data Integrity & Warehousing

Quiz by Robert

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10 questions
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  • Q1
    What term describes the accuracy and consistency of data over its lifecycle in a data warehouse?
    Data Integrity
    Data Normalization
    Data Redundancy
    Data Migration
    30s
  • Q2
    What process involves storing, managing, and retrieving data in repositories for analysis and reporting?
    Data Scrubbing
    Data Warehousing
    Data Mining
    Data Profiling
    30s
  • Q3
    Which of the following is a key factor in maintaining data integrity in a data warehouse?
    Data Compression
    Data Validation
    Data Archiving
    Data Encryption
    30s
  • Q4
    Which type of schema is often used in data warehousing to provide a clear and straightforward view of data?
    Fact Schema
    Star Schema
    Snowflake Schema
    Galaxy Schema
    30s
  • Q5
    What is the primary purpose of data profiling in data warehousing?
    Archiving old data
    Assessing the quality of data
    Exporting data
    Creating visualizations
    30s
  • Q6
    In the context of data warehousing, what does ETL stand for?
    Extract, Transform, Load
    Export, Transfer, Link
    Encode, Transmit, Load
    Evaluate, Test, Launch
    30s
  • Q7
    Which of the following techniques is used to ensure that data remains consistent across different databases in a data warehouse?
    Data Aggregation
    Data Synchronization
    Data Enrichment
    Data Fragmentation
    30s
  • Q8
    What is a common reason for implementing data warehousing in an organization?
    Slower data processing
    Reduced data accuracy
    Improved decision-making
    Increased data redundancy
    30s
  • Q9
    Which term refers to the design approach that organizes data into a two-dimensional structure, often used in data visualization?
    Tree
    Graph
    Matrix
    Table
    30s
  • Q10
    Which of the following best describes a fact table in a data warehouse?
    A table that links dimension tables
    A table that stores metadata
    A table that contains descriptive attributes
    A table that contains quantitative data for analysis
    30s

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