G10 Computer Science Unit Revision 1

It is automated checking by a program that data is reasonable before it is accepted by the computer system.

• Validation

• Verification

• Authentication

• Password check

_______ it ensures that the data is reasonable and acceptable.

___________ it used to check that the data does not change as it is being entered.

Checks that the value of a number is between an upper value and lower value

• Range Check

• Length Check

• Type Check

• Format Check

It checks either that the data contains an exact number of characters.

• Range Check

• Length Check

• Type Check

• Format Check

It checks to ensure that some data has been entered and the value has not been left blank.

• Presence Check

• Length Check

• Type Check

• Format Check

It checks that the characters entered conform to a pre-defined pattern.

• Presence Check

• Length Check

• Type Check

• Format Check

is a checking that final digit is included in the code, by calculating all the digits in the code normally used in bar codes, product codes, ISBN.

• Presence Check

• Length Check

• Check digit

• Format Check

It checks that the data entered is of a given type

• Presence Check

• Type Check

• Check digit

• Format Check

Tick all verification methods for Input Data

• Double entry

• Screen Visual Check

• Triple Data Input

• Face Recognition

• Password