Topic 4 Validation and Verification

Question 1

Validation

Answer 1

A computerised check that the data input is sensible and reseasonable

Question 2

Validation check (3)

Answer 2

Range check: data value must lie within certain limits. e.g. shoe size

Length check: a text value must contain a certain number of characters. e.g. postcode

Presence check: the data value must be present. e.g. password

Question 3

Verification

Answer 3

Checks that the data typed matches the source document.

Question 4

Verification techniques (2)

Answer 4

Proof reading

Double entry