单项选择题

Which phase of the software engineering process results in the Software Requirements Specification

A．definition phase
B．engineering phase
C．maintenance phase
D．development phase
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单项选择题
Which values are NOT permitted to be part of the primary key
A．NULL
B．punctuation
C．special characters
D．alpha-numeric characters
单项选择题
Which operating system can Oracle database NOT be used in
A．DOS
B．UNIX
C．Windows95
D．IBM Mainframes
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