2.3 Planning Robust Programs: Validation

This type of check makes sure that the data field cannot be left empty.

• Presence check

• List check

• Range check

• Type check

• Format check

This type of check is needed to make sure that the user enters data in every field so that you do not get incomplete data.

• Presence check

• List check

• Range check

• Type check

• Format check

This check is used to only only specific data can be entered.

• Presence check

• List check

• Range check

• Type check

• Format check

This check is used to make sure that the user enters a number or a date between 2 values. For example, "Enter a month between 1 and 12".

• Presence check

• List check

• Range check

• Type check

• Format check

Only allows certain data to be entered. For example "numbers only" or "letters only".

• Presence check

• List check

• Range check

• Type check

• Format check

Makes sure that the user enters the data in a specific way, For example, writing an email address.

• Presence check

• List check

• Range check

• Type check

• Format check

This validation check makes sure that the user enters the correct number of characters required.

• Presence check

• List check

• Length check

• Type check

• Format check

These checks would be used to make sure that a password is at least 8 characters long and includes uppercase, lowercase, numbers and symbols.

• Presence check

• List check

• Length check

• Type check

• Format check

Validation can check that.... (click all that apply)

• Data is accurate

• Data is sensible

• Data is reasonable

• Data meets the requirements

Data validation can check that the data entered by the user is accurate.

• True

• False