PID段由38个字段构成,其中只有病人ID列表(Patient Identifier List)和病人姓名(Patient Name)是必填的 每个字段有八个属性构成:序号、最大长度、类型、可选性、重复性、相关字典、字段标识码、字段名
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In this case, the patient name is updated in two places.
如果是这样,就需要在两个位置更新患者姓名。
For example, consider a case where a patient name is always accessed with the patient demographics and the patient id is the key.
例如,考虑这样一种情况:患者姓名总是与其统计信息一起访问的,而患者ID是关键字。
But, since you don't update a patient name as often as you access demographics, you've still optimized the system for performance.
但由于更新患者姓名的频率远远低于更新患者统计信息的频率,因此就性能来说,系统依然得到了优化。
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