What is the most common serialization mechanism used in Django ORM for data transformation?

In Django ORM, the most common mechanism for data serialization is based on the django.core.serializers module. It allows converting QuerySets or model objects into formats like JSON, XML, YAML, and back.

JSON serialization is most frequently used because it is a convenient format for data transfer between client and server.

Example of serializing a QuerySet to JSON:

from django.core import serializers
from myapp.models import MyModel

queryset = MyModel.objects.all()
json_data = serializers.serialize('json', queryset)

Deserialization from JSON back into objects:

for obj in serializers.deserialize('json', json_data):
    obj.save()

Thus, the standard serialization mechanism in Django ORM is to use django.core.serializers, supporting multiple formats, with JSON being the most popular.