Verification
Why use Verification?
- It is a process to ensure that data is accurate and has been inputted correctly
- It helps to maintain data integrity and reduce data entry errors
Characteristics and Uses of Verification
- Visual checking: Manual method of verifying data by comparing the source with the entered data
- Double data entry: A method where data is entered twice and then compared for inconsistencies
Is there a Need for Validation as well as Verification?
- While verification ensures data is entered correctly, validation makes sure the data is sensible, reasonable and within acceptable boundaries
- Both verification and validation are essential in maintaining data accuracy and quality
Worked example
A local railway company is considering introducing a new system for its passengers using e-tickets on a smartphone. Details of each of the passengers have been entered into the database.
a. Give one reason why this data was verified on entry.
[1]
To ensure that the data entered has been copied correctly [1]
Proofreading is sometimes thought to be verification.
b. Explain the difference between verification and proofreading.
[2]
Proofreading is checking the content of the data for errors [1]
Verification is comparing the data with the original [1]
