以下哪种数据库模式将是更好的模型
例如:
Teacher(id, name, surname, login,password, subject, degree....)
Student(id, name, surname, login, password, group, faculty....)
VS
User(id, login, password, name, surname)
Student(id, group, faculty...)
Teacher(id, object, degree...)
并通过内部联接加入吗?
哪种方法更可取?