7.6 Validation and Verification Checks Cambridge IGCSE 0478

What is the purpose of validation in data entry?

• To ensure that input data is reasonable and follows predefined rules.

• To compare the entered data with an original source.

• To check if the data entered is 100% correct.

• To remove duplicate values from a dataset.

Which of the following is an example of a range check?

• Ensuring that a student's age is between 5 and 18 when entering school records.

• Checking that a user has entered a valid email address format.

• Ensuring that a password contains at least eight characters.

• Comparing two versions of a document to identify differences.

What does a length check do?

• Ensures that input data contains the correct number of characters.

• Ensures that input data is within a specific numerical range.

• Compares two sets of data to confirm accuracy.

• Checks that input data is unique and not duplicated.

Which validation check ensures that only numeric values are entered into a field that requires numbers?

• Type Check

• Presence Check

• Format Check

• Range Check

Which validation check ensures that a field is not left blank?

• Presence Check

• Type Check

• Length Check

• Format Check

What does a format check validate?

• That the input follows a specific pattern or structure (e.g., email format).

• That input data falls within a predefined range.

• That the entered values match an original source.

• That input data does not exceed a certain number of characters.

What is the purpose of a check digit validation?

• To verify that a sequence of numbers (e.g., barcode, credit card number) has been entered correctly.

• To ensure that input values do not exceed a set limit.

• To verify that the user has entered the correct password.

• To check that the data contains only alphabetical characters.

Which of the following is a verification method rather than validation?

• Double Entry Check

• Format Check

• Range Check

• Type Check

How does a visual check help in verification?

• By requiring a user to manually compare entered data with the original data.

• By ensuring that input data is in the correct format.

• By automatically checking for duplicate values in a database.

• By checking that data is not left blank.

Which verification method involves entering the same data twice to ensure accuracy?

• Double Entry Check

• Presence Check

• Range Check

• Type Check