7.2.3. One-to-many
A unidirectional one-to-many association on a foreign key is an unusual case, and is not recommended.
<class name="Person">
<id name="id" column="personId">
<generator class="native"/>
</id>
<set name="addresses">
<key column="personId"
not-null="true"/>
<one-to-many class="Address"/>
</set>
</class>
<class name="Address">
<id name="id" column="addressId">
<generator class="native"/>
</id>
</class>create table Person ( personId bigint not null primary key ) create table Address ( addressId bigint not null primary key, personId bigint not null )
You should instead use a join table for this kind of association.
