Need confirmation for single primary key class

[Celinio Fernandes]

A primary key class is optional.
And it is valid for entity beans only. CMP and BMP too.

If we use CMP then we declare it in the deployment descriptor file :

 
<prim-key-class>java.lang.Integer</prim-key-class>
<primkey-field>accno</primkey-field>
   

If we use BMP then we create a primary key class and declare it in the deployment descriptor file :

<prim-key-class>com.foo.ejb.ProductPK</prim-key-class> 

No

<primkey-field> 

in that case.

Is this correct ? thanks in advance