Answered MIGX with 2 related tables - is there a Tutorial ?

<?xml version="1.0" encoding="UTF-8"?>
<model package="curconv" baseClass="xPDOObject" platform="mysql" defaultEngine="MyISAM" version="1.0">
    <object class="CCbase" table="ccbase" extends="xPDOSimpleObject">
        <field key="basecur" dbtype="varchar" precision="3" phptype="string" null="false" default=""/>
        <field key="updatedon" dbtype="datetime" phptype="datetime" null="false"/>
        <field key="description" dbtype="text" phptype="string" null="false" default=""/>
        <field key="symbol" dbtype="varchar" precision="3" phptype="string" null="false" default=""/>
        <field key="uprate" dbtype="decimal" precision="5,4" phptype="float" null="false" default="0"/>
        <field key="rnupdn" dbtype="tinyint" precision="1" phptype="boolean" null="false" default="0" />
        <field key="rndlvl" dbtype="tinyint" precision="1" phptype="integer" null="false" default="0" />
        <field key="appid" dbtype="varchar" precision="32" phptype="string" null="false" default=""/>
        <field key="upmins" dbtype="int" precision="4" attributes="unsigned" phptype="integer" null="false" default="0"/>
        
        <field key="deleted" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" />
        <field key="published" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" /> 
       
        <field key="createdon" dbtype="datetime" phptype="datetime" null="true"/>
        <field key="createdby" dbtype="int" precision="10" attributes="unsigned" phptype="integer" null="false" default="0" />
        <field key="editedon" dbtype="datetime" phptype="datetime" null="true"/>
        <field key="editedby" dbtype="int" precision="10" attributes="unsigned" phptype="integer" null="false" default="0" />
        
        <index alias="PRIMARY" name="PRIMARY" primary="true" unique="true">
                <column key="basecur" collation="A" null="false" />
        </index>
        <composite alias="CCentry" class="CCentry" local="basecur" foreign="basecur" cardinality="many" owner="local" /> 
        <aggregate alias="CreatedBy" class="modUser" local="createdby" foreign="id" cardinality="one" owner="foreign"/>
        <aggregate alias="EditedBy" class="modUser" local="editedby" foreign="id" cardinality="one" owner="foreign"/>
    </object>

    <object class="CCentry" table="ccentry" extends="xPDOSimpleObject">
        <field key="basecur" dbtype="varchar" precision="3" phptype="string" null="false" default=""/>
        <field key="entrycur" dbtype="varchar" precision="3" phptype="string" null="false" default=""/>
        <field key="description" dbtype="text" phptype="string" null="false" default=""/>
        <field key="exrate" dbtype="decimal" precision="10,4" phptype="float" null="false" default="0"/>
        
        <field key="deleted" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" />
        <field key="published" dbtype="tinyint" precision="1" attributes="unsigned" phptype="integer" null="false" default="0" /> 
        
        <field key="createdon" dbtype="datetime" phptype="datetime" null="true"/>
        <field key="createdby" dbtype="int" precision="10" attributes="unsigned" phptype="integer" null="false" default="0" />
        <field key="editedon" dbtype="datetime" phptype="datetime" null="true"/>
        <field key="editedby" dbtype="int" precision="10" attributes="unsigned" phptype="integer" null="false" default="0" />
        
        <index alias="PRIMARY" name="PRIMARY" primary="true" unique="true">
                <column key="entrycur" collation="A" null="false" />
        </index>
        <aggregate alias="CCbase" class="CCbase" local="basecur" foreign="basecur" cardinality="one" owner="foreign" /> 
        <aggregate alias="CreatedBy" class="modUser" local="createdby" foreign="id" cardinality="one" owner="foreign"/>
        <aggregate alias="EditedBy" class="modUser" local="editedby" foreign="id" cardinality="one" owner="foreign"/>
    </object>
</model>