| Processing VSAM Data Sets in SAS Programs |
You can use a SAS fileref or the ddname as a convenient way of
referring to a VSAM data set in a SAS language statement or command. The first
time the ddname is used in a SAS statement or procedure, SAS assigns it as
a fileref for the VSAM data set. Alternatively, you can use the FILENAME statement
to associate a fileref with a VSAM data set. The FILE statement later uses
the fileref rather than the data set name to refer to the data set.
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