Introduction Consider the following dentist office system.
Patient appointments and dental histories are kept by the office on a personal computer. First thing in the morning, a schedule is printed with the appointments for that day. When a patient arrives, the receptionist keys in the arrival time. The system assigns a visit number and the patient's dental record is accessed and printed and given to the dentist. At the end of the appointment, the service code for each service performed on this visit is keyed in by the receptionist.