We can enforce different behaviors from Odoo when loading data by setting certain attributes on the enclosing <odoo> element or the <record> element itself:

1. Add a publisher only created at installation time, but not updated on subsequent updates. However, if the user deletes it, it will be recreated:

<odoo noupdate="1"> 
    <record id="res_partner_packt" model="res.partner"> 
        <field name="name">Packt publishing</field> 
    </record> 
</odoo>

2. Add a book category that is not changed during addon updates and not recreated if the user deletes it:

<odoo noupdate="1"> 
    <record id="book_category_all" model="library.book.category"   
            forcecreate="false"> 
        <field name="name">All books</field> 
    </record> 
</odoo>