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Author Question: Data-gathering bias can be reduced by sampling. Indicate whether the statement is true or ... (Read 73 times)

corkyiscool3328

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on: Jul 7, 2018
Data-gathering bias can be reduced by sampling.
 
  Indicate whether the statement is true or false

Question 2

What number will the following query in the HAPPY INSURANCE database return?
 
  SELECT count (DISTINCT column_name)
  FROM user_tab_columns;
 
  A) 2
  B) 3
  C) 10
  D) 13


Brenm

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  • Posts: 359
Reply #1 on: Jul 7, 2018
Answer to Question 1

TRUE

Answer to Question 2

D


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