title: Insert into two tables in one request
body: <p>i have two tables: <code>Human</code> and <code>Student</code>. Student extends from Human.</p>
  
  <p>I tried to do it like this :</p>
  
  <pre><code>CREATE OR REPLACE TYPE HUMAN_Type AS OBJECT(CIN NUMBER(8), NameCHAR(32),SurNAME CHAR(32),Email VARCHAR(32),Adress varchar(32)) NOT FINAL;
  CREATE TYPE Student_Type UNDER HUMAN_Type (NumSTUD NUMBER(3),Dat_EXP Date, Nbr Number(2));
  CREATE table Human of HUMAN_Type (primary key (CIN));
  CREATE table Student of Student_Type (primary key (NumStud));
  </code></pre>
  
  <p>If I want to insert a Student, should I make two request (one for Student and one for Human) or is there a way to insert into Human and Student in one single request?</p>