不具有修改记录功能的是().
A:edit B:change C:browse D:modify database
使用MODIFY DATABASE命令打开数据库设计器时,如果指定了NOEDIT选项,则表示()。
A:只是打开数据库设计器,禁止对数据库进行修改 B:打开数据库设计器,并且可以对数据库进行修改 C:在数据库设计器打开后程序继续执行 D:打开数据库设计器后应用程序会暂停
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
Software architecture reconstruction is an interpretive, interactive, and iterative process including many activities. (1) involves analyzing a system's existing design and implementation artifacts to construct a model of it. The result is used in the following activities to construct a view of the system. The database construction activity converts the (2) contained in the view into a standard format for storage in a database. The (3) activity involves defining and manipulating the information stored in database to reconcile, augment, and establish connections between the elements. Reconstruction consists of two primary activities: (4) and (5). The former provides a mechanism for the user to manipulate architectural elements, and the latter provides facilities for architecture reconstruction.
空白(3)处应选择()
A:database normalization B:schema definition C:database optimization D:view fusion
Visual FoxPro中修改当前数据表结构的命令是______。
A:MODIFY STRUCTURE B:MODIFY DATABASE C:MODIFY TABLE D:MODIFY DATABASE TABLE
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