NUMBER Data type: integer, fixed point and floating point : Number « PL SQL Data Types « Oracle PL/SQL Tutorial

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

SQL>
SQL> declare
  2      v1_nr NUMBER(10);   -- integer
  3      v2_nr NUMBER(10,0); -- also integer
  4      v3_nr NUMBER(5,5);  -- fixed point
  5      v4_nr NUMBER(5,-3); -- also fixed point
  6      v5_nr NUMBER;       -- floating point
  7
  8  begin
  9     NULL;
 10
 11  end;
 12  /

PL/SQL procedure successfully completed.

SQL>