Which of the following is correct about RDBMS?
1
Primary key \(\subseteq\) super key \(\subseteq\) candidate key
2
Primary key \(\subseteq\) candidate key \(\subseteq\) super key
3
Super key \(\subseteq\) primary key \(\subseteq\) candidate key
4
Candidate key \(\subseteq\) super key \(\subseteq\) primary key