diff --git a/docs/db-api.txt b/docs/db-api.txt
index 99bb30054b..3dc0efbabd 100644
--- a/docs/db-api.txt
+++ b/docs/db-api.txt
@@ -1621,6 +1621,15 @@ For example, this deletes all ``Entry`` objects with a ``pub_date`` year of
 
     Entry.objects.filter(pub_date__year=2005).delete()
 
+When Django deletes an object, it emulates the behavior of the SQL
+constraint ``ON DELETE CASCADE`` -- in other words, any objects which
+had foreign keys pointing at the object to be deleted will be deleted
+along with it. For example::
+
+    b = Blog.objects.get(pk=1)
+    # This will delete the Blog and all of its Entry objects.
+    b.delete()
+
 Note that ``delete()`` is the only ``QuerySet`` method that is not exposed on a
 ``Manager`` itself. This is a safety mechanism to prevent you from accidentally
 requesting ``Entry.objects.delete()``, and deleting *all* the entries. If you