data verification and validations

date that is accurate sencible has integrity

most errors occur at the data output stage

transmission errors occurs because of a problem in the program itself.

wrong instruction given to a computer result in wrong output

to verify data we compare it as it appears in two or more places.

the method of entering data twice is called the double -entry method

it is not possible for incorrect data to get through the verification process

data verification involves checking whether data lies within a sensible range

a consistency check test the data in two or more associated field to ensure that it is logical

a range check helps us to see if the alphabetic input is either to large or small.