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SQL (Structured Query Language) MCQ Quiz (Multiple Choice Questions And Answers)

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12. DCL provides commands to perform actions like

  • Change the structure of Tables
  • Insert, Update or Delete Records and Values
  • Authorizing Access and other control over Database
  • None of the above

13. The COUNT function in SQL returns the number of _____

  • Values
  • Distinct values
  • Group by
  • Columns

14. Which data type can store unstructured data in a column?

  • RAW
  • CHAR
  • NUMERIC
  • VARCHAR

15. A SQL query will not work if there are no indexes on the relations - Is it true?

  • NO
  • YES