December 2014
Intermediate to advanced
858 pages
40h 10m
English
Content preview from SAS Certification Prep Guide, 4th Edition
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Chapter 20: Controlling Memory Usage
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Correct answer: bYou can use the BUFNO= system option or data set option to control how many buffers are available for reading or writing a SAS data set. Using BUFNO= can improve execution time by limiting the number of input/output operations that are required for a particular SAS data set. However, the improvement in I/O comes at the cost of increased memory consumption. The number of buffers is not a permanent attribute of the data set and is valid only for the current step or SAS session.
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Correct answer: dA page is fixed in size when the data set is created, either to a default value or a specified value. You can use the BUFSIZE= option to control the page size of an output SAS data set. ...
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