The DICTIONARY tables component is specified in the FROM clause of a SELECT statement. DICTIONARY is a reserved libref for use only in PROC SQL. Data from DICTIONARY tables are generated at run time.

proc access dbms=dbf; create adlib.invoice.access; /* create access descriptor */ path="c:\sasdemo\invoice.dbf"; assign=yes; rename invoicenum = invnum amtbilled = amtbilld amountinus = amtinus; ...