In the conceptual data model an instantiation of a particular business entity is described as:在概念数据模型中特定的业务实体将被描述为::()?
（A）Record记录
（B）Dataset数据集
（C）Rule规划
（D）Row行
（E）Entity occurrence实体实例化 答案解析: 直接考书中的概念，请，原文如下:
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