Describe the key classes used in the Django framework.

In Django, key classes are related to core framework components:

• django.db.models.Model — base class for data models (ORM). Each model corresponds to a database table.
• django.views.View — base class for creating views that handle HTTP requests.
• django.forms.Form and django.forms.ModelForm — classes for creating forms and data validation.
• django.urls.path and django.urls.re_path — functions for URL routing.
• django.http.HttpRequest and django.http.HttpResponse — classes for handling requests and responses.

These classes form the foundation for building Django web applications, enabling data handling, request processing, and response generation.