migrate

makemigrations

sqlmigrate

showmigration

Database level Implementation – books.count()

Template Language Implementation – {{ books | length }}

Python Implementation – len(books)

None of the above

Migrations are files where Django stores changes to your models.

All of the above

They are files saved in migrations directory.

They are created when you run makemigrations command.

sqlall

createtables

validate

syncdb

there is no such possibility

dumpdata appname >> '/app_dir/MyData.json'

migrate appname 'MyData.json'

dump appname /home/user/project/MyData.json

The admin interface treats all fields as optional

Add req = False to field

Add to field required = False

Add blank = True to the field

self.ordering = ["id"]

self.sorting = ["id"]

class Meta:
    ordering = ["id"]

class Sort:
    ordering = ["id"]

The name will be replaced with values of Python variable.

It will be displayed as name in HTML.

None of the above

{{ name }} will be the output.