Question:
How many candidate keys are possible with the table?RollNo Name Mobile City 1 Arun 91 Delhi 2 Sanjay 92 Mumbai 3 Arun 93 Noida 4 Varun 94 Guwahati 5 Arti 95 Kolkata
How many candidate keys are possible with the table?
| RollNo | Name | Mobile | City |
| 1 | Arun | 91 | Delhi |
| 2 | Sanjay | 92 | Mumbai |
| 3 | Arun | 93 | Noida |
| 4 | Varun | 94 | Guwahati |
| 5 | Arti | 95 | Kolkata |
Updated On: Nov 4, 2024
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The Correct Option is B
Solution and Explanation
The ‘RollNo’ and ‘Mobile’ columns can serve as candidate keys due to their uniqueness for each student in the table.
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