Please enable JavaScript.
Coggle requires JavaScript to display documents.
Validation & Verification - Coggle Diagram
Validation & Verification
Verification
The process of checking data entered into the computer is identical to the data on the source documents.
Verification Methods
Proof Reading
Reading through the data inputted and comparing to the source document
Online Banking
Sending Back Printouts
Check with the person the details relate to
Pupils are given printouts of their details to note any errors
Double Keying
Data is keyed in twice and the computer will only accept the data for processing if the two versions are identical
Creating an account (Password
Validation
An automatic computer check to ensure that data entered is reasonable
Validation Checks
Lookup Check
Checks the data is in a list of acceptable values
Title=Mr, Mrs etc
Cross Field Check
Checks the data in two fields corresponds
If someone's gender is stored as female but title is Mr
Range Check
Check the data falls withing a certain range of values
The month must be between 1 and 12
Data Type
Checks the data is the correct type (Numeric etc)
Shoe size must be numeric
Check Digit
An algorithm used to check artificial numbers
ISBN Numbers
Format Check
Checks data is in the right format
National insurance number
Presence Check
Checks a data entry has been made
A name must be entered into a student database