>>Little. Numeric fields that have no decimals, can be changed to int, saving significant space.
>
>Mike,
>
>The Numeric (N) fields are stored in a table as string, including dot and minus sign, if present, each occupying one byte

Thanks, I know. A change from 12 to 9 will make relatively little difference, no? But an int can be a more significant change going from 10 characters to 4 bytes.