Validation and Verification Flashcards

1
Q

How can a data error occur?

A

It may not be read properly from a data capture sheet

Typing errors occur

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2
Q

Name two examples of verification

A

Proofreading

Double Entry

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3
Q

What is presence validation?

A

It checks that data has been entered

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4
Q

What is existence validation?

A

It checks that the entry matches stored data

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5
Q

What is control total data checking?

A

A calculation that adds up a total of a set of the numbers and checks that the total is meaningful

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6
Q

What is hash total data checking?

A

A calculation that adds up a set of numbers but the total has no meaning

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7
Q

What is the difference between validation and verification?

A

Validation is by a computer but verification is by a person e.g. proof-reading

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8
Q

What is range validation?

A

Checks that the data is within a set range

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9
Q

What is length validation?

A

Checks that the correct number of characters has been entered

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10
Q

What is check digit validation?

A

Checks that the data is allowed or can exist

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