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

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

3. 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

4. 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

5. 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

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

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