Types of libraries:

1. System Defined.
2. User Defined.

System Defined: Created by the SAS. These are 3 types.

                  a. Work.
                  b. SAS user.
                  c. SAS help.

Work Library: It is a default and temporary storage place of SAS file.

Sasuser: It is a permanent storage place of  user defined files.

Sashelp: It is a permanent storage place of system defined files.

User Defined libraries: Created by the user.


5.RESULTS WINDOW: It saves programming outputs until end of the SAS job. Here output window managed by the result window.