/* 1. creates a library engine v9 pointing to directory c:\ sas \*/	libname libtest v9 ‘c:\sas\’
/* 2. creates a library engine v8 pointing to directory c:\ sas */	libname libtest v8 ‘c:\sas\’
/* 3. creates a library engine odbc indicating the ODBC driver called CRM*/	libname libdata odbc dsn=CRM;’
/* 4. reads it using a SET instruction in a single datastep pass	data w; do i=1 to nobs; set sashelp.class nobs=nobs; output; end; run;