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Which of the following attributes or attribute combinations is most likely to be a candidate key? first-name + last-name + date-of-birth first-name + date-started employee-riumber

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Which of the following attributes or attribute combinations is most likely to be a candidate key? first-name + last-name + date-of-birth first-name + date-started employee-riumber last-name + employee-number date-started None of the above is a candidate key

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