settings.py

DATABASES = {
    'default': {
        'ENGINE': 'django.db.backends.postgresql_psycopg2', 
        'NAME': 'sample', # DATABASE NAME
        'USER': 'postgres', # NAME OF USER (DEFAULT IS postgres)
        'PASSWORD': 'xyz', # whatever password you have kept.
        'HOST': '127.0.0.1', # HOST in which the psql server is running on
        'PORT': '5432', # PORT in which the psql server is running on
    }
}