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MCQ 336: All aggregate operations, return a value of null when applied on an:

  1. Avg collection
  2. Sum collection
  3. Data collection
  4. Empty collection

MCQ 337: To grant a privilege with the grantor set to the current role associated with a session, we can add the clause:

  1. granted by current-roll
  2. define by current-role
  3. select by current-role
  4. set by current-role

MCQ 338: When a transaction is rolled back and entered at the aborted stage, the available system's options are of:

  1. 2 types
  2. 3 types
  3. 4 types
  4. 5 types

MCQ 339: For each attribute, the JDBC retrieve its:

  1. Name
  2. Address
  3. Data type
  4. Both A and C

MCQ 340: The authorization types can be assigned to users as:

  1. All
  2. None
  3. Combinations
  4. All of the Above

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