In a college database system, User$-1$ is a department secretary who deals with the student details like regno, name, address, phone number. User$-2$ is a course monitor who deals with students course details like number of courses register in the semester, number of credits register in current semester, number of credits completed, and cgpa. User$-3$ is an account manager who deals with the regno, name, fee paid, and type of residence $($day scholar$/$hosteller$).$ Show the specific information actually available at each level of schemas with respect to the particular user. Show the specific information actually available at each level of schemas with respect to the particular user.