Which of the following statements about object oriented database is not correct?(72).

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问题 Which of the following statements about object oriented database is not correct?(72).

选项 A、Each object has a unique object identify in the system
B、Encapsulation and inheritance are two important features of object oriented database
C、A subclass can inherit the attributes and methods of all its superclasses
D、A supereloss includes the attributes and methods at all subclasses

答案B

解析 译文:下列关于面向对象数据库的描述中,哪一个是错误的?
   B.封装和继承是面向对象数据库的两个重要特征。
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