Data and quality of data 1.1 WJEC GCSE ICT Data and quality of data 1.1

Objectives Understand what data encoding is. Know why we use data encoding. Suggest the benefits and drawbacks of data encoding.

Encoding and Storing Data Encoding involves shortening data when inputting it into a computer system and has numerous benefits. Can you give me examples of coded data? Gender – M/F Teacher initials on school timetables – JB (Joe Bloggs) Mon, Tues, Wed, Thurs, Fri, Sat, Sun

Advantages Data entry can be faster Data entry can be more accurate Less storage space required Faster searching for data Coded data can be more secure if people don’t know what it means

Disadvantages Meaning of data can be obscured If people are unsure of the code data entry can be slow If codes are complicated they can be entered incorrectly Security of data

Storing Data Name some advantages and disadvantages of storing data using ICT instead of paper based storage.

Task Summarise pros/cons of encoding data Summarise pros/cons of storing data Answer questions in the booklet