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SAS Exam A00-212 Topic 3 Question 5 Discussion
Actual exam question for
SAS's
A00-212 exam
Question #: 5
Topic #: 3
[All A00-212 Questions]
Topic #: 3
Given a data set with the following characteristics:
50000 observations
200 character variables
In the text below, enter the compression option that will provide the most compression.
Case is ignored and standard SAS syntax rules apply.
Suggested Answer:
D
T he YES or CHAR setting for the COMPRESS= option uses the RLE compression algorithm. RLE compresses observations by reducing repeated consecutive characters (including blanks) to two-byte or three-byte representations. Therefore, RLE is most often useful for character data that contains repeated blanks. The YES or CHAR setting is also good for compressing numeric data in which most of the values are zero
http://web.utk.edu/sas/OnlineTutor/1.2/en/60477/m82/m82_12.htm
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