Described Article-Reporter relationship in many-to-one topic.
Many-to-one relationships
=========================
-To define a many-to-one relationship, use :class:`~django.db.models.ForeignKey`::
+To define a many-to-one relationship, use :class:`~django.db.models.ForeignKey`.
+
+In this example, a ``Reporter`` can be associated with many ``Article``
+objects, but an ``Article`` can only have one ``Reporter`` object::
from django.db import models
