How many superkeys are there for the schema described in problem 1? Justify your answer (and be careful not to double count keys).

problem 1 Given the following schema for a student relation: Student-schema = (std_id, first_name, adviser_id, email, dept_id) Where: std_id is the students id. first_name is the students first name. adviser_id is the id of the students adviser. email is the students email address. dept_id is the id of the of the studentss department.

Each student will be represented by exactly one tuple. b. Each student has a unique id. c. No two students will have the same email address. d. No two students in a single department will have the same first_name. e. No two departments will have the same dept_id f. A department can have any number of students. g. A student will have only one adviser.