HOW TO CHECK FOR DATA ACCURACY:-
Data has to be checked for accuracy when it is entered into a computer system. If this is not done they may be serious errors in your work. There are several methods on how to check for data for accuracy in your work. These are validation, verification, spelling and grammar check, range check, proof-reading, delete buttons, redrafting and digital check. Range check is used to recognise dates, numbers and percentages.
For example: A patient’s medical details were sent to the wrong house because the inaccurate postcode was typed in. This means another person would be able to see the patient’s personal medical details and the patient wouldn’t receive the expected medical details. Another example is: to type a child’s date of birth inaccurately so they may be given a medicine not appropriate to their age. This could give them serious side-effects or health problems.
A validation check is to demonstrate the truth of data entered into the computer by using data accuracy checks. Validation checking is carried out by software to make sure that data is sensible and will not cause problems when it is processed. Digital checks are used widely to validate numeric data with numbers. Meaning single digits calculated from other digits and attached to the end of data when it’s stored.
A verification check makes sure that data has been entered or copied from another place, has been transferred correctly. Sometimes where data is to be entered via a key board, two operators may be asked to enter the same data.
The two versions can then be compared and if they match the data is stored. If not, the source document is verified and looked at to see where the errors have been made. Then mistakes can be corrected and stored. This type of verification is time consuming because two people have to do it.
HOW I HAVE USED VALIDATION AND VERIFICATION IN MY WORK:-
I have used validation and verification in my work using the software’s Microsoft Word and Microsoft Access. I have entered the data and checked it to make sure it is accurate. I have done this by using validation and verification.
Meaning I have checked my information to make sure it’s’ appropriate and then I have verified it by double-checking it. I have used the delete buttons and proof-reading whilst typing on Microsoft Word to validate and verify my work. The main check I have used is the spelling and grammar check to correct errors.
I have also used validation rules in Data Type on Microsoft access when I created a database. I have used several type of data types one of them are Text which allows the user to type text, numbers (alpha-numeric) and postcodes. Another one is Number where you can type Date of Birth, date, ID, age and telephone. Finally date/time allows you to type date and date of birth. I have verified my data on Microsoft access by proof-reading it.
VERIFICATION CHECK
A verification check makes sure that data has been entered or copied from another medium, has been transferred correctly.
