Help with record definition

Help, I have a table with the following definition:

CREATE TABLE USER_ROLES (
    USER_NAME  VARCHAR(20) NOT NULL,
    ROLE_ID    INTEGER NOT NULL
);

PRIMARY KEY (USER_NAME, ROLE_ID);
FOREIGN KEY (USER_NAME) REFERENCES USERS (USER_NAME);
FOREIGN KEY (ROLE_ID) REFERENCES "ROLE" (ROLE_ID);

and have defined a class for it as: 

public class UserRole extends SRecordInstance
{
    public static final SRecordMeta meta = new
RecordMeta(UserRole.class, "USER_ROLES");
	
    public static final SFieldString USER_NAME = new
SFieldString(meta, "USER_NAME", 20, SCon.SFD_PRIMARY_KEY);
	
    public static final SFieldLong ROLE_ID = new SFieldLong(meta,
"ROLE_ID", SCon.SFD_PRIMARY_KEY);
}

is it possible to define references to the USERS and ROLE tables ?
and how do I do it!




------------------------ Yahoo! Groups Sponsor --------------------~--> 
Yahoo! Groups gets a make over. See the new email design.
http://us.click.yahoo.com/hOt0.A/lOaOAA/yQLSAA/5cFolB/TM
--------------------------------------------------------------------~-> 

 
Yahoo! Groups Links

<*> To visit your group on the web, go to:
    http://groups.yahoo.com/group/SimpleORM/

<*> Your email settings:
    Individual Email | Traditional

<*> To change settings online go to:
    http://groups.yahoo.com/group/SimpleORM/join
    (Yahoo! ID required)

<*> To change settings via email:
    mailto:[email protected] 
    mailto:[email protected]

<*> To unsubscribe from this group, send an email to:
    [email protected]

<*> Your use of Yahoo! Groups is subject to:
    http://docs.yahoo.com/info/terms/