Help Your Business Grow - Validation And Verification Quiz

Explanation
When you enter data with lots of mistakes or errors, it is called GIGO. GIGO stands for "Garbage In, Garbage Out," which means that if you input incorrect or faulty data into a system, the output or results will also be incorrect or faulty. This emphasizes the importance of ensuring the accuracy and quality of data input in order to obtain reliable and meaningful results.

Explanation
Validation aims to make sure that data is sensible, reasonable, and allowable. This means that the data meets certain criteria or rules and is within acceptable limits or boundaries. Validation ensures that the data is valid and can be used effectively and reliably for its intended purpose. It checks if the data is permissible or allowed according to predefined rules or standards, ensuring that it is suitable for use in the system or process.

Explanation
Validation and verification are not the same and do not work in the same way. Verification refers to the process of evaluating a system or component to determine whether it meets the specified requirements. On the other hand, validation is the process of evaluating a system or component during or at the end of the development process to determine whether it satisfies the customer's needs and expectations. Therefore, the correct answer is false.

Explanation
A type check validation would ensure that the input in a field with a 'numeric' datatype is indeed a number. It would verify that no other type of data, such as letters or symbols, are entered into the field. This validation helps to ensure that the data entered into the field is of the correct type and meets the required format.

Explanation
Verification is the process of comparing the data entered with the original source document to ensure accuracy and correctness. This involves cross-checking and confirming that the information is consistent and matches the original source. Therefore, the statement "Verification means checking the data you have entered against the original source document" is true.

Explanation
A picture check would be the appropriate validation check for a field like a postcode, which is always laid out in the same order. A picture check ensures that the input matches a specific pattern or format. In this case, the postcode would need to match the expected format, such as a specific number of digits or a combination of letters and numbers. This helps to ensure that the data entered is in the correct format and reduces the chances of errors or inconsistencies.

Explanation
A presence check is used to ensure that data is entered into a field and that it cannot be left blank. This validation method ensures that the required information is provided and prevents the submission of incomplete or missing data.

Explanation
The best validation method to use when selling goods priced between £10 and £100 would be a range check. This method ensures that the input falls within the specified range, in this case, between £10 and £100. It helps to validate that the price entered is within the expected range and avoids any errors or inconsistencies in pricing.

Explanation
A check digit is a form of validation that is used to verify the accuracy of a series of numbers. It involves adding an extra digit to the end of the number sequence, which is calculated based on the other digits in the sequence. By recalculating the check digit and comparing it to the original, you can determine if the series of numbers was entered correctly. This method is commonly used in barcodes, credit card numbers, and identification numbers to ensure accuracy and detect errors in data entry.

Explanation
When you choose a new password and have to enter it twice, it is an example of verification. Verification is the process of checking if the entered data matches the original data. In this case, the user is verifying that they have entered the correct password by entering it twice. Validation, on the other hand, checks if the entered data meets certain criteria or rules. In this scenario, the system may validate the password to ensure it meets the required complexity or length.