If you use an ODBC application such as Microsoft Access
that exports databases using one-level names, you should use the ODBC
Data Source Administrator to define a library that is named User.
SAS usually places any data set that has a one-level name in the Work
library, which is deleted at the end of the SAS session. But, if a
User library has been defined, SAS places all one-level named data
sets in that library. That library is saved at the end of the SAS
session. In a multi-user environment, each client connection to a
SAS server can have its own User library defined.