Which clause would you use in a SELECT statement to limit the display to those employees whose salary is greater then 5000?()
A、ORDER BY SALARY > 5000
B、GROUP BY SALARY > 5000
C、HAVING SALARY > 5000
D、WHERE SALARY > 5000
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Which three statements correctly describe the functions and use of constraints? ()
AConstraints provide data independence.
BConstraints make complex queries easy.
CConstraints enforce rules at the view level.
DConstraints enforce rules at the table level.
EConstraints prevent the deletion of a table if there are dependencies.
FConstraints prevent the deletion of an index if there are dependencies.
使用两种编码方案对比特流01100111进行编码的结果如下图所示,编码1和编码2分别是( )。
A、NRZ和曼彻斯特编码
B、NRZ和差分曼彻斯特编码
C、NRZI和曼彻斯特编码
D、NRZI和差分曼彻斯特编码
Which interconnect topology is supported for pSeries cluster solutions with Cluster Systems Manager?()
A、ATM
B、Ethernet
C、SP Switch2
D、Fibre Channel
使用VC6打开考生文件夹下的源程序文件modi1.cpp,该程序运行时有错误,请改正错误,使得程序通过运行。程序输出: 5 a 1 注意:不要改动main函数,不能增行或删行,也不能更改程序的结构,错误的语句在∥******error******的下面。
使用VC6打开考生文件夹下的源程序文件modi1.cpp,该程序运行时有错误,请改正错误,使得程序正常运行。并使程序输出结果为: ABCDEF ABCDEF ABCDEF 注意:不要改动main函数,不能增行或删行,也不能更改程序的结构,错误的语句在∥******error******的下面。