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MCQs

Total Questions : 30 | Page 3 of 3 pages
Question 21. Literals do not have identifiers, and, therefore, cannot be individually referenced like objects.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 22. An attribute's value is always literal.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 23. A collection of literals or object types is called a bag.
  1.    False
  2.    True
 Discuss Question
Answer: Option A. -> False
Question 24. An attribute's value is either a literal or an object identifier.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 25. Database objects are almost always transient.
  1.    True
  2.    False
 Discuss Question
Answer: Option B. -> False
Question 26. Specifying a key ensures that no two objects belonging to a class have the same value for the key attribute(s).
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 27. If you know all the possible values that an attribute can have, you can enumerate those values in ODL.
  1.    True
  2.    False
 Discuss Question
Answer: Option A. -> True
Question 28. An ordered collection of elements of the same type are called sets.
  1.    False
  2.    True
 Discuss Question
Answer: Option A. -> False
Question 29. In ODL, you specify an operation using parentheses after its name.
  1.    False
  2.    True
 Discuss Question
Answer: Option B. -> True
Question 30. You may specify an object identifier with only one unique tag name.
  1.    False
  2.    True
 Discuss Question
Answer: Option A. -> False

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