SQLite 3 Database with Django

I am stuck on Django Documentation tutorial on displaying SQLite table.

" If you’re interested, run the command-line client for your database and type \dt (PostgreSQL), SHOW TABLES; (MySQL), or .schema (SQLite) to display the tables Django created. "

I have created a project named mysite. Location : C:\Python34\Scripts\mysite

Inside mysite, there are mysite folder, db.sqlite3, and manage.py.

I opened command prompt and navigate to C:\Python34\Scripts\mysite and I type .schema and it returns " . schema is not recognized.. "

My settings.py database file :

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.sqlite3',
        'NAME': os.path.join('BASE_DIR' , 'db.sqlite3'),
    }
}

I also can't define BASE_DIR. I don't know about the db.sqlite3 file. I cannot know if the file is .db extension.

Could someone help me to find out ?