术语 | auxiliary key |
释义 | auxiliary key 辅助键 All or part of the contents of a field (other than primary key field) used to locate a record.Such a key typically identifies some attribute of the entity such as the discount classification of a customer or the data of purchase of a vehicle. 用来确定一个记录的一个字段(不是主键字段)的全部或部分内容。这种键通常用来识别 实体的某属性,如顾客的折扣等级或车辆的购买日期。 |
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