data vs information
Data has no meaning or relavence where as information is this data but has a context.
"65" is just a random number, this is data.
"65 is an age" we are now giving the number a meaning, therefore it becomes information.
information is data which has been
- converted to give it meaning
- organised in some way
knowlege is how to interpret and aply information by aplying rules and once this is done, decisions can be made on the infromation recived.
Data- raw facts or figures whith no meaning or relavence
information- processed data or data with a context
knowlege- derived from information by aplying rules to it
reasons for encoding data
- coded data takes less efor to type in
- more data can be seen on screen
- takes up less storage space
- easier to check that a code is accurate using validataion checks
examples of encoding
size of clothes
- S = small
- M = medium
- L = Large
- XL = Extra large
- LHR = London Heathrow
- MAN = Manchester
- RHO = Rhodes
problems with encoding
encoding data has one main flaw, the data is les accurate when it is encoded. there may also be a problem if there are 2 codes that clash.