UGC-NET | UGC NET CS 2018 July – II | Question 68

Database systems that store each relation in a separate operating system file may use the operating system’s authorization scheme, instead of defining a special scheme themselves. In this case, which of the following is false?
(A) The administrator enjoys more control on the grant option
(B) It is difficult to differentiate among the update, delete and insert authorizations.
(C) Cannot store more than one relation in a file.
(D) Operations on the database are speeded up as the authorization procedure is carried out at the operating system level.


Answer: (D)

Explanation: Database systems that store each relation in a separate operating system file may use the operating system’s authorization scheme, instead of defining a special scheme themselves. In this case:

  • The administrator enjoys more control on the grant optionTrue
  • It is difficult to differentiate among the update, delete and insert authorizations.True
  • We cannot store more than one relation in a file.True
  • Operations on the database are speeded up as the authorization procedure is carried out at the operating system level. False
  • So, option (D) is correct.

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