This allows a whole number or decimal number.
Only numbers can be entered, no letters or symbols.
This automatically formats the data to have a £ or $ or Euro symbol in frot of the data and also ensures that there are two decimal places.
Logical, boolean, yes/no
This data type is often refered to as different things, you may hear it called 'logical', 'bolean' or 'yes/no'
Data is something which is not useful for example: 24061999. These numbers have no meaning and are not useful.
Information is when the data becomes useful for example: 24061999. These numbers have been said to be a date a birth and now the data is useful therefore the numbers 24061999 is information.
Knowledge is having the wisdom to link information together and understanding what to do with the information.