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

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

选项 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

答案D

解析

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笔试

原NCRE全国计算机四级

NCRE全国计算机四级

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

笔试

原NCRE全国计算机四级

NCRE全国计算机四级

In(66)the strength of the carder signal is varied to represent binary 1 or 0.(67)is a system that can map a name to an address a

In C program, all variables must be(70)before use, usually at the beginning of the function before any(71)statements.

The(71) program is generally translated to an object program, which is in a form directly understandably by the computer。

(71)isonekindofsoftwareabsolutelynecessaryforeverycomputer.

The prototyping method is a dynamic design processs, which requires people who use prototyping method to have the following capa

Atypicalperipheraldevicehas(66)whichtheprocessorusestoselectthedevice’sinternalregisters.

Which of the following statements describe(s)the properties of a purely segmented memory system?(73). Ⅰ. It suffers from i

Software quality assurance is now an emerging sub - discipline of(36). As Buckly and oston point out,(37) software quality assur

Thefollowingsuggestionsincrease"Programs"(1)andmakethemeasierto(2)：1．Useastandardindentiontechnique,blankli

事业单位的下列经济活动中，涉及“事业基金——投资基金”科目的有()

该病人的肠道感染属于引起该感染致病菌的形式是

A．主诉B．现病史C．个人史D．既往史E．家族史全身健康状况，如有无高血压、传染病等情况应为

某模拟信号放大器输入与输出之间的关系如图所示，那么，能够经该放大器得到5倍放大的输入信号μi(t)最大值一定：

某受压钢筋混凝土柱，高3m，两端固定，其临界力为100kN。若将此构件改为两端铰支，则其临界力为( )kN。

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Whatisthemaintopicofthelecture?

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The(71)　program　is　generally　translated　to　an　object　program,　which　is　in　a　form　directly　understandably　by　the　computer。

The　prototyping　method　is　a　dynamic　design　processs,　which　requires　people　who　use　prototyping　method　to　have　the　following　capa

Which　of　the　following　statements　describe(s)the　properties　of　a　purely　segmented　memory　system?(73).　　　　　　Ⅰ.　It　suffers　from　i

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某受压钢筋混凝土柱，高3m，两端固定，其临界力为100kN。若将此构件改为两端铰支，则其临界力为(　　)kN。