Inserting into subtype table values from supertype table in oracle I had created two object types and tables based on that types in oracle:

create or replace type TEMPLOYE as object(
num_emp integer,
nom_emp varchar2(40),
prenom_emp varchar2(50),
adresse_emp varchar2(200),
tel_emp varchar2(15)
) not final;
/
create or replace type TMEDECIN under TEmploye (
num_med integer,
specialite Varchar2(30)
);
/
CREATE TABLE EMPLOYEES OF TEMPLOYE;
CREATE TABLE MEDECINS OF TMEDECIN;


and I had inserted some values into EMPLOYEES like :

INSERT INTO EMPLOYEES VALUES (
TEMPLOYE (10,'BOUCHEMLA','Elias','6, hai sidi serhane -Khemis El Khechna-Boumerdes',024873549)); 


Finally I need to insert a record into MEDECINS table with num_med=10 and specialite='Cardiologue' and the others attributes from the parent table (EMPLOYEES), how to do that using select * statement or a reference?
Simply INSERT ... SELECT.

insert into
  medecins
select
  e.*,
  10,
  'Cardiologue'
from
  employees e
where
  e.num_emp = 10
;