static void Main(string[] args)
        {
            using (var db = new StudentContext())
            {
                var student = new Student() {Name = "Fabio Scapel"};
                var mathSubject = new Subject() {Name = "math"};
                var scienceSubj = new Subject() {Name = "Data Structures"};

                student.Subjects.Add(mathSubject);
                student.Subjects.Add(scienceSubj);

                db.Students.Add(student);
                db.SaveChanges();

            }
        }