单选题
Which of the following statements about object oriented database is not correct?
(72)
.
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
【正确答案】
B
【答案解析】
[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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