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Database management system practice test MCQ: operation which is used to take union of tuples from relations that are not union compatible is classified as with options full union operation, join union operation, outer union operation and inner union operation for online classes in distance learning, online education for undergraduate and postgraduate degree programs. Free study guide is for online learning relational operations quiz with MCQs to practice test questions with answers.

MCQ: Operation which is used to take union of tuples from relations that are not union compatible is classified as

1. FULL UNION operation
2. JOIN UNION operation
3. OUTER UNION operation
4. INNER UNION operation

C

MCQ: If matching tuples are not found, kind of OUTER JOIN operation which keeps all tuples of first and second relation is classified as

1. LEFT OUTER JOIN
2. FULL OUTER JOIN
3. HALF OUTER JOIN
4. DOWNWARD JOIN

B

MCQ: Operations which are used to enhance power of expression of relational algebra includes

1. generalized projection
2. recursive closure operations
3. outer JOIN operations
4. all of above

D

MCQ: If common attributes of two relations are classified as join attributes then OUTER UNION must be equal to

1. LEFT OUTER JOIN
2. FULL OUTER JOIN
3. HALF OUTER JOIN
4. DOWNWARD JOIN

B

MCQ: If matching tuples are not found, kind of OUTER JOIN operation which keeps all tuples of second relation out of two relations is classified as

1. UPWARD JOIN
2. DOWNWARD JOIN
3. LEFT OUTER JOIN
4. RIGHT OUTER JOIN

D