Define NATURAL type variable : NATURAL « PL SQL Data Types « Oracle PL/SQL Tutorial

1. Oracle PL/SQL Tutorial
2. PL SQL Data Types
3. NATURAL

SQL>
SQL> SET ECHO ON
SQL> SET SERVEROUTPUT ON
SQL> DECLARE
  2    age   NATURAL;
  3
  4  BEGIN
  5    age := 10;
  6    DBMS_OUTPUT.PUT_LINE('age:');
  7    DBMS_OUTPUT.PUT_LINE(age);
  8  END;
  9  /
age:
10

PL/SQL procedure successfully completed.

SQL>