Data validation and verification

What is an automatic computer check to make sure data entered is sensible and reasonable known as?

• Double entry
• Verification
• Validation

What validation type would make sure a post code was entered in the correct format?

• Length check
• Format check
• Presence check

What validation type would you use to check that numbers fell within a certain range?

• Range check
• Presence check
• Check digit

What validation type checks that a field is not left blank?

• Format check
• Length check
• Presence check

What validation type uses the last one or two digits to check the other digits are correct?

• Length check
• Format check
• Check digit

What validation type checks a minimum number of characters have been entered?

• Length check
• Format check
• Range check

Data is to be entered into a computer in the format YYMMDD. Which of the following is not a valid date?

• 310921
• 211113
• 21st June 2004

Which of the following statements is false?

• Validation can check that the data is sensible
• Validation can check that the data falls between certain allowable boundaries
• Validation can check that the data is correct

Which of the following is NOT a method of verification?

• Double entry - typing the data in twice and getting the computer to check the second version against the first
• Using presence, range and length checks to make sure that no mistakes happen
• Printing out what you have typed in and comparing it against the source data

Which method of validation would be ideal for a shop to use when entering information into a stock database?

• Presence check
• Format check
• Lookup