Types of Validation Checks

Types of Validation Checks

​Range Check

​Specifies that data entered must be numerical data in range, for example in the range 1 to 8.

​

​Example data:

​5 (valid)

​19 (invalid)

Presence Check

​Makes sure that a field has to have data entered in it, for example, when entering a new password.

​

​Example data:

​any data entered (valid)

​leaving it blank (invalid)

Type Check

​Specifies that only a certain type of data can be entered, for example, not allowing letters into a field that should only contain numbers.

​

​Example data:

​5 (valid)

​five (invalid)

Lookup

​Providing the user with a drop-down list to select data. For examples, when selecting an employment status , a drop-down list of options employed, self-employed, unemployed.

​

​Example data:

​Anything from the list (valid)

Anything else (invalid)

Length Check

​Specifies that data entered has to be a certain number of characters long. For example, a password needs to have 8 or more characters.

​

​Example data:

​p@s5w0rd (valid because it has 8 characters)

l3tme1n (invalid because it has 7 characters)

Format Check

​Specifies that data entered has to conform to a specific format. Some pieces of data are formed of characters in a very specific order. For example, the new Brunei vehicle registration has three letters (starting with letter B), followed by a space, followed by four numbers.

​

​Example data:

BAX 5518 (valid because it has 8 characters)

BAA 2241 (invalid because it has 7 characters)

Multiple Choice

Write which type of validation check shall be used:

A program that requires only to accept ages from 12 to 17.

• range check

• presence

• type

• lookup

• length

Multiple Choice

Write which type of validation check shall be used:

An essay textbox that only validates 500 characters.

• range check

• presence

• type

• lookup

• length

Multiple Choice

Write which type of validation check shall be used:

A handphone number textbox that only accepts integers.

• range check

• presence

• type

• lookup

• length

Multiple Choice

Write which type of validation check shall be used:

University student ID number that starts with a year, followed by a hyphen, course code, and enrollment number.

• presence

• type

• lookup

• length

• format

Multiple Choice

Write which type of validation check shall be used:

A website textbox that does not allowed blank input.

• presence

• type

• lookup

• length

• format

Multiple Choice

Write which type of validation check shall be used:

A validation check embedded in drop-down box list.

• presence

• type

• lookup

• length

• format

A real estate agent stores data about the properties they sell. Suggest suitable validation for the following data items.​

Open Ended

Property Type

Open Ended

Number of Bedrooms

Open Ended

Selling Price

Open Ended

Garden

Open Ended

Seller's Family Name

Poll

How do you evaluate yourself in this activity?

• Excellent

• Very Good

• Good

• Fair

• Poor