Complete the following statement: A business rule...完成下面的陈述:业务规则…:()?
(A)...only exists at the level of the physical data model.只存在于物理数据模型层面
(B)...defines constraints on what can and cannot be done.定义什么能做,什么不能做
(C)...identifies an entity instance.识别出实体的实例
(D)...measures a business process.度量业务流程
(E)...defines an entity.定义实体 答案解析: 该题比较简单,没有学过DAMA的估计也能做得出来,规则,就是什么能做,什么不能做,如我们的校规、公司的规程...
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