Data are the names given to basic facts such as names and numbers. Examples of data are unit price, quantity sold, times, dates, product, names , addresses, tax codes etc.
Information is processed data, that is, information is data which have been converted into a more useful form. For example : total price * quantity sold. Here total price is informatron and unit price, quantity sold are data.
Codes are used to reduce the volume of data. By coding, recording of data can be made less laborious, less prone to error and the data become more manageable and easier to manipulate.
