Join Expressions MCQs & Quiz Online PDF Book Download

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MCQs on Join Expressions PDF Book Download

MCQ: To specify a normal join, using keyword inner is

  1. Mandatory
  2. Optional
  3. Independent
  4. Free

B

MCQ: Join preserves tuples only in relation named after right outer join operation, is to be

  1. Right outer join
  2. Right inner join
  3. Left inner join
  4. Left outer join

A

MCQ: ON predicate is written like a

  1. From clause
  2. Select clause
  3. Where clause
  4. Define clause

C

MCQ: To specify that a normal join is to be used, a join clause can specify inner join instead of

  1. Outer join
  2. Natural join
  3. Outer right join
  4. Outer left join

A

MCQ: Left outer join preserves tuples only in relation named before

  1. Right outer join operation
  2. Right inner join operation
  3. Left inner join operation
  4. Left outer join operation

D