Data Checking

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How does a check digit work?
Uses the last one or two digits of a code to check that the other digits are correct.
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What does a length check do?
The length check ensures that the data entered is of the correct length (not too long or too short).
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How does a lookup table work?
A lookup table looks up acceptable values in a table.
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What is a presence check?
A presence check makes sure that data has been entered into a field.
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What does a range check do?
A range check checks to see if the data entered is within the specified range.
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What is a format check?
A format check makes sure that all data entered is in the right format (e.g. numbers and letters).
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How does a spell check work?
A spell check looks up words in a dictionary and corrects words that have been typed incorrectly.
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Other cards in this set

Card 2

Front

What does a length check do?

Back

The length check ensures that the data entered is of the correct length (not too long or too short).

Card 3

Front

How does a lookup table work?

Back

Preview of the front of card 3

Card 4

Front

What is a presence check?

Back

Preview of the front of card 4

Card 5

Front

What does a range check do?

Back

Preview of the front of card 5
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