MN.hbm.xml

<?xml version="1.0"?>
<hibernate-mapping xmlns="urn:nhibernate-mapping-2.2" namespace="NHibernate.DomainModel" assembly="NHibernate.DomainModel" default-access="property" default-lazy="false">
	<class name="M" table="M">
		<id name="UniqueSequence" column="uniqueSequence" type="long" unsaved-value="0">
			<generator class="native">             </generator>
		</id>
		<set name="Children" lazy="false" inverse="true" cascade="all-delete-orphan">
			<key column="fkParent"/>
			<one-to-many class="N"/>
		</set>
	</class>
	<class name="N" table="N">
		<id name="UniqueSequence" column="uniqueSequence" type="long" unsaved-value="0">
			<generator class="native">             </generator>
		</id>
		<property name="String" type="string" column="String"/>
		<many-to-one name="Parent" column="fkParent" not-null="true"/>
	</class>
</hibernate-mapping>