operations = [ migrations.CreateModel(name='Book', fields=[ ('id', models.AutoField(...)), ('title', models.CharField(max_length=200))]), migrations.CreateModel(name='Library', fields=[ ('id', models.AutoField(...)), ('name', models.CharField(max_length=200))]), migrations.AddField(model_name='book', name='library', field=models.ForeignKey(to='app.Library')) ]