<?xml version="1.0" encoding="UTF-8"?>
    <entity name="photo" alias="p">
    <primary_key>id</primary_key>
    <columns>
        <column name="id" />
        <column name="name" unique="1" />
    </columns>
    <lobs>
        <lob name="blob_content" size_column="doc_size" />
    </lobs>
</entity>