A.python manage.py runserver 8000B.python manage.py shellC.python manage.py startapp app02D.python manage.py migrate
A.python manage.py runserver 8000B.python manage.py shellC.python manage.py startapp app02D.python manage.py makemigrations
A.ForeignKey:一對多,將字段定義在多的一端中。B.ManyToManyField:多對多,將字段定義在任意一端中。C.ManyToOneField:多對一,將字段定義在多的一端中。D.OneToOneField:一對一,將字段定義在任意一端中。