Implicit Connection
If a PP2 application running in an IBM mainframe environment submits a SQL request without specifying an explicit connection to the server, an implicit connection is attempted, based on the job or session under which the application is running.
However, network‑attached platforms do not provide an implicit connection mechanism. See Teradata Call-Level Interface Version 2 Reference for Network-Attached Systems (B035‑2418) for details of the implicit connection mechanism.