Here is a log extract from SAS 9.4 (it has been the same for years):
NOTE: Libref SCOUT was successfully assigned as follows:
Engine: ODBC
Physical Name:
7 libname scout clear;
NOTE: Libref SCOUT has been deassigned.
If you look in the Explorer of Display Manager you use File > New to connect a library and right-click Delete to disconnect it.
If you look in the help for LIBNAME (9.4) you see:
Associates or disassociates a SAS library with a libref (a shortcut name), ...
So, we have assign/deassign, new/delete, associate/disassociate and clear. We also have LIBNAME and LIBREF. Does anyone else find this a confusing mess? What chance do SAS beginners have?
New and Delete are completely wrong: the underlying files or data are not created or destroyed.
Please could we have one pair of terms? I suggest connect and disconnect. That would be consistent with much database use.