Answer: A candidate key is a key selected from the set of super keys.
Generally, a candidate key does not have null or empty values and consists of one or many attributes.
According to the above-mentioned student table, the id and phone do not have any redundant attributes.
A candidate key does not have null or empty values and consists of one or many attributes.
There can be more than one candidate keys for a table.
A candidate does not have any redundant attributes.
A candidate key is a super key with no redundant attributes.
Explanation:I hope this helps