1.

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

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.



Discussion

No Comment Found