跟crakman做sas base认证试题（51）

shiyiming

From crackman's blog on Baidu


               
                <p><font size="4">51.The following program is submitted:<br>
<br>
  proc contents data=_all_;<br>
  run;<br>
<br>
Which statement best describes the output from the submitted program? </font></p>
<p><font size="4">&nbsp;&nbsp;&nbsp;&nbsp;  A. The output contains only a list of the SAS data sets that are contained in the WORK library. <br>
&nbsp;&nbsp;&nbsp;&nbsp;  B. The output displays only the contents of the SAS data sets that are contained in the WORK library.<br>
&nbsp;&nbsp;&nbsp;&nbsp;  C. The output displays only the variables in the SAS data sets that are contained in the WORK library.<br>
&nbsp;&nbsp;&nbsp;&nbsp;  D. The output contains a list of the SAS data sets that are contained in the WORK library and displays the contents of those data sets.<br>
<br>
Answer:  D</font></p>
<p><font size="4">本题考察的是PROC CONTENTS。<br>
答案为D，具体可以在运行该语句后得到结果。<br>
包括了：list也就是WORK下的数据集的目录；然后每一个数据集的contents，里面包括variables等信息。<br>
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