way it's a method of mapping the contents of database tables (rows),
to objects in programming-language-space. DBIx::Class is an ORM.
+=head2 Relationship
+
+In DBIx::Class a relationship defines the connection between exactly
+two tables. The relationship condition lists the columns in each table
+that contain the same values. It is used to output an SQL JOIN
+condition between the tables.
+
+=head2 Relationship bridge
+
+A relationship bridge, such as C<many_to_many> defines an accessor to
+retrieve row contents across multiple relationships.
+
=head2 ResultSet
This is an object representing a set of data. It can either be an