django 3

music/models.py

from django.db import models

class Album(models.Model):

    artist = models.CharField(max_length=50)

    album_title = models.CharField(max_length=50)

    genre = models.CharField(max_length=50)

    album_logo = models.CharField(max_length=500)

class Song(models.Model):

    album = models.ForeignKey(Album, on_delete=models.CASCADE)

    file_type = models.CharField(max_length=50)

    song_title = models.CharField(max_length=50)

-----------------------------------------------------

#sync model with database
python manage.py migrate

#update model
python manage.py makemigrations music

music\migrations\0001_initial.py
  - Create model Album
  - Create model Song

python manage.py sqlmigrate music 0001

BEGIN;
--
-- Create model Album
--
CREATE TABLE "music_album" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "artist" varchar(50) NOT NULL, "album_title
" varchar(50) NOT NULL, "genre" varchar(50) NOT NULL, "album_logo" varchar(500) NOT NULL);
--
-- Create model Song
--
CREATE TABLE "music_song" ("id" integer NOT NULL PRIMARY KEY AUTOINCREMENT, "file_type" varchar(50) NOT NULL, "song_titl
e" varchar(50) NOT NULL, "album_id" integer NOT NULL REFERENCES "music_album" ("id") DEFERRABLE INITIALLY DEFERRED);
CREATE INDEX "music_song_album_id_62a413c8" ON "music_song" ("album_id");
COMMIT;

python manage.py migrate

Operations to perform:
  Apply all migrations: admin, auth, contenttypes, music, sessions
Running migrations:
  Applying music.0001_initial… OK