New Perspectives on Computer Concepts 2014 17th Edition by June Jamrich Parsons ,Dan Oja

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You are creating a movie review database, and one field stores the "star rating" that a popular reviewer gave each movie. Movies are rated from one to four stars, so the Stars field is valid only if the number is between 1 and 4. To ensure that nobody enters a value below 1 or above 4, you can use a field
rule to filter the data as it's entered into the table.