题目内容

关于ROLLBACK的描述，正确的是（）

A. ROLLBACK语句会将事务对数据库的更新写入数据库
B. ROLLBACK语句会将事务对数据库的更新撤销
C. ROLLBACK语句会退出事务所在程序
D. ROLLBACK语句能够将事务中使用的所有变量置空值

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下列关于软件著作权中翻译权的叙述不正确的是：翻译权是指（）的权利。

A. 将原软件从一种自然语言文字转换成另一种自然语言文字
B. 将原软件从一种程序设计语言转换成另一种程序设计语言
C. 软件著作权人对其软件享有的以其他各种语言文字形式再表现
D. 对软件的操作界面或者程序中涉及的语言文字翻译成另一种语言文字

建立一个供应商、零件数据库。其中“供应商”表S（Sno，Sname，Zip，City）分别表示：供应商代码、供应商名、供应商邮编、供应商所在城市，其函数依赖为：Sno→（Sname，Zip，City），Zip→City。“供应商”表S属于（）。

A. 1NF
B. 2NF
C. 3NF
D. BCNF

配置VLAN有多种方法，下面（）不是配置VLAN的方法。

A. 把交换机端口指定给某个VLAN
B. 把MAC地址指定给某个VLAN
C. 由DHCP服务器动态地为计算机分配VLAN
D. 根据上层协议来划分VLAN

Ravi,like many project(1),had studied the waterfall model of software development as the primary software life-cycle(2).He was all set to use it for an upcoming project,his first assignment.However,Ravi found that the waterfall model could not be used because the customer wanted the software delivered in stages,something that implied that the system had to be delivered and built in(3)and not as(4). The situation in many other projects is not very different.The real world rarely presents a problem in which a standard process,or the process used in a previous project,is the best choice.To be the most suitable,an existing process must be(5)to the new problem.A development process,even after tailoring,generally cannot handle change requests.To accommodate change requests without losing control of the project,you must supplement the development process with a requirement change management process. 空白（5）处应选择（）

A. modified
B. used
C. suited
D. tailored