Validation and Verification

Question 1

Data validation what is it?

Answer 1

Ensure that only data that is permitted is accepted

Question 2

Data verification is what?

Answer 2

Used to check that the data does not change as it is being entered

Question 3

What is Range Check and what type of check is it?

Answer 3

Only accepts values in a certain range, Validation

Question 4

What is format check and what type of check is it?

Answer 4

Checks that the data is in the correct format, Validation

Question 5

What is length check and what type of check is it?

Answer 5

Checks that the data is the correct length of characters, Validation

Question 6

What is Lookup Table and what type of check is it?

Answer 6

Looks up acceptable values in a table, Validation

Question 7

What is Presence Check and what type of check is it?

Answer 7

Ensures that a field has not been left empty, Validation

Question 8

What is Check digit and what type of check is it?

Answer 8

Additional digit added onto a set of numerical data which it is derived from in a way that can be replicated so it can be checked for errors, Validation

Question 9

What are the 2 methods of data verification?

Answer 9

Double entry:
Entering the data twice in order, if the computer detects the 2 entries and if they are different, an error message is displayed

Proofreading data:
Human proofreading the data. Very costly and time consuming.