To
reference a SAS file, you assign a libref (library reference) to
the SAS library in which the file is stored. Then you use the
libref as the first part of the two-level name (libref.filename) for the file. To assign
a libref, you can submit a LIBNAME statement. You can store the
LIBNAME statement with any SAS program to assign the libref
automatically when you submit the program. The LIBNAME statement
assigns the libref for the current SAS session only. You must
assign a libref each time you begin a SAS session in order to
access SAS files that are stored in a permanent SAS library other
than clinic. (Work is the default libref for a temporary SAS
library.)
You can also ...