Double entry verification: When data is entered twice and documents are compared by the computer. Visual Verification: notice(this is not proof-reading) Data is entered and compared to the original data that is a hard copy. To ensure data is ERROR FREE we can use the Validation Check . This checks if the data is ‘reasonable’ and ‘makes sense’ however, data may not be necessarily correct. In order to achieve this various Validation Checks can be carried out: Automated:
Range Check: This checks the data within a given range and certifies it is from the correct range. Look-Up Check: Makes sure data matches valid entries.
Format Check: ensures data matches a pre-determined pattern on letters/numbers. Some data bases use the input mask function. Length Check: Makes sure data is a reasonable length. e.g. Number of letters. Type check: Ensures that the data is of a particular data type. Spell check/ grammar check.
This can also be achieved manually:
Proof-reading: Sentence structures, correct data entered.
Comparing original document with entered data: make sure data makes sense. Additional tools:
Dictionary, Widows/Orphan control, Templates