Explanation:Intersection operator ignores unique tuples and takes only common ones. 3. The union operation automatically __________, unlike the select clause.
A. Adds tuples
B. Eliminates unique tuples
C. Adds common tuples
D. Eliminates duplicate
Answer:A
Explanation:Intersection operator ignores unique tuples and takes only common ones. 3. The union operation automatically __________, unlike the select clause.
A. Adds tuples B. Eliminates unique tuples C. Adds common tuples D. Eliminates duplicate
Explanation:None. 4. If we want to retain all duplicates, we must write ________ in place of union.