django model query join

from django.db import models

class Author(models.Model):
    name = models.CharField(max_length=255)
    birth_date = models.DateField()

class Book(models.Model):
    title = models.CharField(max_length=255)
    publication_date = models.DateField()
    author = models.ForeignKey(Author, on_delete=models.CASCADE)

# Example Query: Retrieve all books and their authors' names
books_with_authors = Book.objects.values('title', 'author__name')

1. Import the necessary modules and classes from Django.
2. Define two models, Author and Book, with relevant fields and relationships.
3. Create a query to retrieve all books along with the names of their authors.
4. Use the values method on the Book model to specify the fields to be selected in the query result.
5. Use the '__' (double underscore) notation to traverse the ForeignKey relationship from the Book model to the Author model and access the 'name' field of the author.
6. Execute the query and store the result in the books_with_authors variable.