Data and quality of data

Which of the following is a suitable reason for encoding data.

• Saves space

• Saves time entering the data

• Saves storage space

• Saves time

Which of the following is an advantage of storing data using ICT?

• It is easier

• Faster to search for data

• Security issues - hacking

• Data can be password protected and encrypted

Which of the following is a suitable answers when asked for a disadvantage of storing data using ICT?

• Hacking

• Loss of data due to hardware failure

• Viruses

• Training needed to enable staff to access data

Checking that data entered matches​ the original source is...

• Verification

• Validation

• Voldemort

Validation is...

• Checking that data entered matches​

  the original source

• Is a way of checking data is sensible as the data is entered into the system.

• Ensures that data is correctly transferred from one location to another

This is a type of validation that specifies data has to be between 2 values.

• Parity check

• Range check

• Presence check

• Format check

When you proof read over data before you submit.

• Proof reading

• Captcha

• Parity check

• Format check

This is a type of validation where something has to be entered into a field.

• Type check

• Presence check

• Parity check

• Input mask

The last one or two digits in a code are used to check the other digits are correct

• Presence check

• Check digit

• Range check

• Look-up check

This check ensures that the data sent is the same as the data received when data is transmitted from one computer to another.

• Parity check

• Visual check

• Length check

• Range check