A.python manage.py sqlmigrate db_name  table_name
B.python manage.py inspectdb--databasedb_nametable_name
C.python manage.py makemigrations db_nametable_name
D.python manage.py showmigrations db_nametable_name

A.process_view
B.process_exception
C.process_template_response
D.process_middleware_exception