2.6.1 Different types of input validation/Write, interpret and debug code that uses validation techniques

Question 1

Define:

Input validation

Answer 1

Checks made to ensure that data entered is sensible and reasonable.

Question 2

Fill The Blank:

Abnormal inputs or conditions are dealt with using ……….. ………………

Answer 2

Error Checking

Question 3

Fill The Blank:

Error messages must be ………. and provide users with the options available to ………… any issues. This is different to exception handling.

Answer 3

Clear, Resolve

Question 4

Define:

Presence Check

Answer 4

Check to see if a required field that should contain data, has been left blank

Question 5

Define:

Length Check

Answer 5

Ensures that data entered does not contain fewer or more characters than the specified minimum or maximum number

Question 6

Define:

Type Check

Answer 6

Ensure that is input is of the correct data type

Question 7

Define:

Format Check

Answer 7

Used to verify that the data input is of the correct format.

Question 8

Define:

Range Check

Answer 8

Verify that an inputted value lies between a range of set values

Question 9

Define:

Check Digit

Answer 9

An extra value transmitted with data to determine if it is correct or not