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Can you find any alternate keys in the following table? Justify your answer. Reg_no Roll_no Year Name 1 12001Ramya 2 22001Resmi 3 32001Sheeba 4 42002Sona 5 52002Soumya |
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Answer» The candidate key that is not the primary key is called the alternate key. Here the candidate keys are Reg.No, Roll No.+year, Roll No. + name. If we set Reg.No. as the primary key then the other keys are alternate keys. |
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