In a Students table with columns StudentID, FirstName, LastName, and Email, which combination of columns can be considered a super key?

A super key in a database is a group of single or multiple keys which identifies rows in a table. It's a set of attributes, the values of which can be used to uniquely identify a database record.

In the Students table with columns StudentID, FirstName, LastName, and Email, the following combinations can be considered as super keys:

1. {StudentID, FirstName, LastName, Email}
2. {StudentID, FirstName, LastName}
3. {StudentID, FirstName, Email}
4. {StudentID, LastName, Email}
5. {FirstName, LastName, Email}
6. {StudentID, Email}
7. {StudentID, FirstName}
8. {StudentID, LastName}
9. {StudentID}

The minimum super key is {StudentID} if StudentID is unique for every student.

Please note that the above combinations assume that the values are unique across the rows in the table. If there is a possibility of duplicate values, then those combinations cannot be considered as super keys.