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For the entity-relationship model shown, what is the business rule that best describes the model? A written representation of the image below is: A patient

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For the entity-relationship model shown, what is the business rule that best describes the model? A written representation of the image below is: A patient can have zero or one appointments A patient can have zero, one, or more appointments Only one appointment at a time can exist for a patient Appointments are identified by the patient they arc for

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