plz guys need help from you......
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nandini2106:
aaj Ka paper....... haha
yes
answer ka hai
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Answered by
1
name and city bcoz duplicate can be there
why not phno.
a single costomer can go more than one time
how can mob. no. be same
even though if he goes twice the same mob no. cant be allocated
if a single costomer go more than one time then it can be
okay
Answered by
1
Columns with Name and City cannot be specified as a primary key.
Reason:
For example. In brainly, More than 10 people are having the same name which I have and also in that 2 to 3 people are from my hometown.
Mobile number and ID will be constant. It cannot be assigned to 2 users.
Hope this helps!
Reason:
For example. In brainly, More than 10 people are having the same name which I have and also in that 2 to 3 people are from my hometown.
Mobile number and ID will be constant. It cannot be assigned to 2 users.
Hope this helps!
:-))
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