raw data
is unprocessed data that has not been read into a SAS data set. You can use a DATA step to read raw data into a SAS data set from two sources:
instream data
an external file.
CAUTION:
Raw data does not include Database Management System (DBMS) files. You must license SAS/ACCESS software to access data stored in DBMS files. See Chapter 33, 'About SAS/ACCESS Software,' on page 569 for more information about SAS/ACCESS features.