MCQOPTIONS
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| 1. |
Consider a database name interveiwmania whose attributes are internid (primary key), subject, subjectvalue.Internid = {1, 2, 3, 4, 5, 6}Subject = {sql, oop, sql, oop, c, c++}Subjectvalue = {0, 0, 1, 1, 2, 2, 3, 3}If these are one to one relation then what will be the output of the following query?SELECT internidFROM interveiwmaniaWHERE subject IN (SELECT subject FROM interveiwmania WHERE subjectvalue = 3); |
| A. | {1, 2, 3} |
| B. | {3, 4} |
| C. | {5, 6} |
| D. | All of above |
| E. | None of these |
| Answer» D. All of above | |