Question

Consider the following set of requirements for a university database that is used to keep track of students' transcripts

The university keeps track of each student's name, student number, social security number, address and phone, birthdate, gender, `, and degree program (bachelor, Masters, PhD.). Both social security number and student number have unique values for each student.

Each department is described by a name, department code, office number, office phone. Both name and code have unique values for each department.

Each course has a course name, description, and course number, number of semester hours, level, and offering department. The value of course number is unique for each course.

Each section has an instructor, semester, year, course, and section number. The section number distinguishes different sections of the same course that are taught during the same semester/year; its values are 1, 2, 3, ...; up to the number of sections taught during each semester.

A grade report has a student, course, section, letter grade, and numeric grade (0, 1, 2, 3, 4 for F, D, C, B, A, respectively).

Design an ER schema for this application, and draw an ER diagram for that schema.

Specify key attributes of each entity type and structural constraints on each relationship type. Note any unspecified requirements, and make appropriate assumptions to make the specification complete.

Answer 1

The ER diagram required is given below.

Entity : Attributes (Bold are Primary key)

STUDENT : SNum , SSN , Birthdate, Gender, Class, Sname(First Name, Last Name, Middle Name), Caddress(Street, City, State, ZIP), Padd, CPhone, Degree Program.

DEPARTMENT : Dname , Doffice, Dcode, DPhone, College.

COURSE : Cnum, Cdescription, Cname, Semester Hours, Level

SECTION : Partial Key(SNum, Semester, Year) Instructor.

GRADE : Numeric Grade, Letter Grade

STUD_SECT = Student Section

MINOR_DEPT = Minor Department

MAJOR_DEPT = Major Department

DEPT_COURSE = Department Course

COURSE_SECT = Course Section