The default
Base SAS engine for SAS libraries is V9. The V9 engine creates libraries
in the V9 format, and it can also read and write libraries created
using the V7 and V8 engines.
The V9 engine is the
appropriate choice for most applications because it supports the full
SAS data set functionality. The V9 engine also exploits the random
access capabilities of disk devices to achieve greater performance
than is possible with sequential engines.
The V9 engine is the
default engine in most cases, but you can change the specified default
engine with the ENGINE system option. The V9 engine can be used only
for the types of devices that support it.
Note: Use BASE as the engine name
if you write programs that create new SAS libraries and you want to
create the libraries in the latest available format. In SAS®9,
BASE is an alias for V9, and it will be an alias for newer engines
in subsequent releases of SAS.