You can specify a SCALE as an implied exponent.  The  signed  integer
  must  be in the range -128 to 127.  The SCALE specification indicates
  the number of places to shift the decimal point  when  the  field  is
  evaluated.

  When using SCALE, note the following rules:

   o  The SCALE specification  and  the  FRACTIONS  specification  both
      indicate  how  many  digits  in  a  field are to the right of the
      decimal point.  There are, however, two important differences:

       -  The number of FRACTIONS you can specify  is  limited  to  the
          number  of DIGITS you declare for the data type.  With SCALE,
          there is no such limitation.

       -  With SCALE, you can shift the decimal point to the right  and
          to  the  left,  but with FRACTIONS, you can shift the decimal
          point only to the left.

   o  Use a positive integer in the SCALE  specification  to  move  the
      decimal point to the right.

   o  Use a negative integer in the SCALE  specification  to  move  the
      decimal point to the left.