This is called a key attribute!
There are different types of key attributes!
Primary key is the key that is actually chosen, for example a social security number.
There is also a unique key, say our finger prints! they also uniquely identify humans, but usually we prefer to use social security number when we list people (a unique key could be a primary key if we chose so)
We could also identify people by their social security number and a name, but this is unnecessary, as social security number already gives a full identification. Such a reduntant key is called super key.
It formed <span>about 4.5 billion years ago</span><span> </span>
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Answer:
Algorithm:
1. Declare an integer variable N.
2. Read the value N from user.
3.While(N):
3.1 find r=N%10;
3.2 print r in new line.
3.3 Update N as N=N/10.
4.end program.
Implementation in C++.
// header
#include <bits/stdc++.h>
using namespace std;
// main function
int main()
{
// variable
int N;
cout<<"Enter an Integer:";
cin>>N;
// find the digits of number
while(N)
{
// last digit
int r=N%10;
// print last digit
cout<<r<<endl;
// update the number
N=N/10;
}
return 0;
}
Output:
Enter an Integer:329
9
2
3
