AS ICT Coding Data
Number plates Number plates are an example of encoding data they contain a area code and an age identifier.
What is coding data? • Assigning codes to piece of information to shorten it. e.g a skirt in size 10 that’s black would be converted to SK10BK.
Disadvantages and advantages! Disadvantages • Detail can be lost • Useless unless you know the context • Less Accuracy on opinion collections Advantages • Speeds up data entry • You can use validation • Uses less memory • Faster searching
Where its useful. • Clothes stores • Country names • Airlines/flight codes