Validation + Verification cards :)

Presence Check

A validation check ensuring that a data value must be entered. For example, entering a quantity when placing an order.

Length Check

A validation check that ensures the input is not too long or too short, such as ensuring a username is between 8 to 40 characters.

Range Check

A validation check that ensures the input falls within a specified range, commonly applied to numbers, such as ensuring a payment is greater than 0 but less than available funds.

Format Check

A validation check that ensures the data is in the correct format, such as entering a date in the format DD/MM/YYYY.

Type Check

A validation check that ensures the data is of a specified data type, such as confirming input is an integer when specifying a quantity.

Verification

The process of ensuring data entry is accurate, often done via double entry to confirm that both entries match.