In my Parent.hbm.xml:
...
<set
name="children"
lazy="true"
inverse="true"
cascade="all"

>
<key>
<column name="parent_id" />
</key>

<one-to-many
class="Children"
/>
</set>

</class>
</hibernate-mapping>


In my Children.hbm.xml:
...
<many-to-one
name="parent"
class="Parent"
not-null="true"
>
<column name="parent_id" />
</many-to-one>



When I do session.saveOrUpdate(), everything get's populated Except the foreign key in Children table i.e parent_id value is shown null in the Children table.

Am trying these associations for the first time and am sure am doing something wrong in the hbm mapping files.

Make sure you have set the parent on each child as a part of the domain model creation before you save the parent.

Post your save code. david suggested you the right solution. Did you succeed ?

It works when I set the Parent Explicitly from each of the Childern
using the Setters in the Children POJOs. I thought the combination of Cascade and Inverse in the mapping file should take care of such automatic updation of foreign keys?