How can two models be merged into a single model in Django?

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To merge two models in Django, you can use the model inheritance feature provided by Django. Here are the steps to merge two models:

1. Create a new model that will inherit from the two models you want to merge.

from django.db import models
from app1.models import Model1
from app2.models import Model2

class CombinedModel(Model1, Model2):
    # fields and methods
    pass

1. Add any fields, methods or attributes that you need for the combined model.

class CombinedModel(Model1, Model2):
    some_field = models.CharField(max_length=50)
    # methods
    def some_method(self):
        pass

1. Add any meta information that is specific to the combined model, and specify the app_label if necessary.

class CombinedModel(Model1, Model2):
    some_field = models.CharField(max_length=50)

    class Meta:
        app_label = 'app3'

1. Run migrations to create the combined model table in the database.

python manage.py makemigrations app3
python manage.py migrate app3

Now, you can use the CombinedModel in your Django application just like any other model. It will have all the fields and methods from the two merged models, as well as any additional fields or methods you added.