allocations.  (In this sense the <TT
CLASS="TYPE"
>numeric</TT
>
     type is more akin to <TT
CLASS="TYPE"
>varchar(<TT
CLASS="REPLACEABLE"
><I
>n</I
></TT
>)</TT
>
     than to <TT
CLASS="TYPE"
>char(<TT
CLASS="REPLACEABLE"
><I
>n</I
></TT
>)</TT
>.)  The actual storage
     requirement is two bytes for each group of four decimal digits,
     plus three to eight bytes overhead.
    </P
><P
>     In addition to ordinary numeric values, the <TT
CLASS="TYPE"
>numeric</TT
>
     type allows the special value 