Idref

hi ,
if i have DTD like this :

<!ELEMENT db (company*, employee*)>
<!—a company has a company id number and name and contains a list of its products -->
<!ELEMENT company>
<!ATTLIST company
c_id ID #REQUIRED
name CDATA #REQUIRED
>
<!—an employee has a name and the company for which he works -->
<!ELEMENT employee>
<!ATTLIST employee
name CDATA #REQUIRED
company IDREF
e_id ID #REQUIRED
partner IDREF
>


my question is :
the value of atrribute partner (in employee) can have id from category ?? meaning the IDREF can reference to c_id (from category) ???

Certainly seems like their intention, yes.