Alphanumeric or text only allowsyou to type in text, numbers and symbols, whereas, number allowsa whole number or a decimal number.Only numbers can be entered, no letters or symbols, but, if you wanted to automatically add 1 to anumber you would use Autonumber.Currency puts a£, € or a $ in front of the number.Date/Time restricts data entry toa true date.If you want the data to be restricted to one of only two choices then youwould use yes/no which is also known as boolean or logical