Examples

Question 1

Type check & Example

Answer 1

When the program expects only a certain type it reject everything else. (Only letters)

Question 2

Range Check & Example

Answer 2

Check that numbers are with in a certain range. (Date, the month has to be between 1-12)

Question 3

Limit check & Example

Answer 3

Check that a value doesn’t exceed a limit. (Exam mark % cannot be > 100)

Question 4

Length check & Example

Answer 4

Make sure number of characters entered is between a certain number. (Passwords have to be >2 but <15 characters)

Question 5

Format check & Example

Answer 5

Check that the input has the right format. (Id cards might need to be 3 letters followed by 3 numbers)

Question 6

Presence check & Example

Answer 6

Make sure fields are not left blank. (Email when signing up for a game)

Question 7

Consistency check & Example

Answer 7

Entered value is checked against possible answers. (Gender has to be M or F)

Question 8

Check digit & Example

Answer 8

All the numbers go through a formula to produce a final digit (ISBN 1,3,1,3)