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

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

若定义cin＞str；
当输入
Object Windows Programming !
所得的结果是str（　）

A:Object Windows Programming! B:Object C:Object Windows D:Object Windows Programming

若定义cin＞str;当输入Object Windows Programming!所得的结果是str（　）

A:Object Windows Programming! B:Object C:Object Windows D:Object Windows Programming

Which of the following statements about object oriented database is not correct

A:Each object has a unique object identity in the syste 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 superclass includes the attributes and methods of all its subclasses

Which of the following statements about object oriented database is NOT correct

A:Each object has a unique object identity 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 superclass includes the attributes and methods of all its subclasses

若定义cin＞str； 当输入 Object Windows Programming ! 所得的结果是str（　）

A:Object Windows Programming! B:Object C:Object Windows D:Object Windows Programming

Which of the following statements about object oriented databse is not correct（）

A:Each object has a unique object identity 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 subclass includes the attributes and methods of all its subclasses.