Data Management and Analysis Quiz
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Questions and Answers

Wild-code checking and consistency checking are techniques for what?

  • Cleaning data (correct)
  • Coding modification
  • Data entry
  • Data modification
  • Which of the following can be used to monitor a business, offering a combined view of their most-important metrics at a glance?

  • Catalogue
  • Metadata
  • Data Mart
  • Dashboard (correct)
  • For what reason might you TYPICALLY compare a dataset with other sources during data validation?

  • To increase the accessibility of data
  • To ascertain the history of the dataset
  • To help certify the data quality (correct)
  • To understand a process used to transfer the dataset
  • Which of the following will the below query return from the 'product' table? SELECT TOP 3 * FROM Product;

    <p>First 3 rows</p> Signup and view all the answers

    What is the MAIN purpose of data integration from different sources?

    <p>To combine and consolidate data from different sources</p> Signup and view all the answers

    Which term defines whether or not all data that is necessary to meet current and future business information demand is available within the data resource?

    <p>Completeness</p> Signup and view all the answers

    What is NOT involved in a performance stress test?

    <p>Rational performance testing</p> Signup and view all the answers

    The R programming language includes functions that support which of the following?

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

    Which of the following is NOT a type of Join in SQL?

    <p>Group by</p> Signup and view all the answers

    In Excel, which of the following is NOT a recognized data preparation technique?

    <p>Partitioning</p> Signup and view all the answers

    Which of the following is NOT TRUE about Data Profiling?

    <p>It aims to ignore inaccurate and misleading data.</p> Signup and view all the answers

    What is the likelihood that a relationship between TWO or more variables is caused by something other than random chance referred to as?

    <p>Statistical significance</p> Signup and view all the answers

    Which of the following is a consequence of maintaining and improving data quality?

    <p>Increased revenue</p> Signup and view all the answers

    In SQL, which clause combines all records that have identical values in a particular field?

    <p>GROUP BY</p> Signup and view all the answers

    What is the MAIN purpose of data integration from different sources?

    <p>To combine data from different sources into a unified view.</p> Signup and view all the answers

    Which of the following is the correct process of loading data from the source system to a data warehouse?

    <p>Extract, Transform, Load</p> Signup and view all the answers

    Which of the following are TYPICAL benefits of synchronizing data?

    <p>d) To improve availability.</p> Signup and view all the answers

    When would UAT TYPICALLY be performed on a piece of software?

    <p>After application code is developed but before system integration testing.</p> Signup and view all the answers

    Which data quality dimension ensures that data has undergone cleansing to ensure it is correct and useful?

    <p>Validity</p> Signup and view all the answers

    What is the process of loading data from the source system to a data warehouse called?

    <p>Extract, Transform, Load</p> Signup and view all the answers

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