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Author Question: Unlike the decision tree used in management science, what doesn't the analyst's tree contain? A) ... (Read 126 times)

Zoey63294

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on: Jul 7, 2018
Unlike the decision tree used in management science, what doesn't the analyst's tree contain?
 
  A) decisions
  B) conditions
  C) outcomes
  D) actions

Question 2

Describe the delete set-to-null option (for implementing a referential integrity constraint).
 
  What will be an ideal response?


djofnc

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

C

Answer to Question 2

The delete set-to-null option allows a record to be deleted if its primary key value is referred to by a foreign key value of a record in another relation. As a consequence, in all of the records where the foreign key value refers to the primary key of the record that is being deleted, the value of the foreign key is set to null.


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