Question 1

Input sanitisation (1 mark)

 ...cleaning up input data / removing unwanted data

 ...by example (e.g. removing special characters / preventing SQL injection)

Validation (1 mark)

• ...checking whether input data should be allowed / is sensible / follows criteria

• ...by example (e.g. goals cannot be less than 0)

Verification (1 mark)

• ... checking whether data has been entered correctly

• ...by example (e.g. double entry / visual check)

Authentication (1 mark)

• ...ensuring only allowed / authorised users can gain access

• ...by example (e.g. usernames /passwords)

Maintainable code (1 mark)

• ...to allow other programmers to understand the code

• ...by example(e.g. comments, indentation, meaningful variable names)

Question 1 (b)

1 mark per bullet max 1

• Easier to remember / to enter / to read

• Faster to enter / read

• Fewer digits to remember / to enter / to read

• Less prone to error when entering / reading / communicating

• Quick to convert into binary

Do not accept "easier to understand"

Question 2 (a)

• Existence check

• Male/Female

• No other entry possible

Question 2 (b)

• Range check

• must be a (real) number

• Must be positive