Integer Field Type
Use the Integer field type for non-decimal numeric values where performance and table storage limitations are especially important.
In tables, the integer field type is stored as a 4-byte binary value, consequently it requires less memory than other numeric data types. As a binary value, it requires no ASCII conversion. For more information about the specifications for this type, see the tables of Data and Field Types.
See Also
CREATE TABLE - SQL Command | Numeric Expression Creation | Data and Field Types | Numeric Operators