SNAX/APC Management Programming Manual

Glossary
111813 Tandem Computers Incorporated Glossary–11
transaction program (TP). In SNA LU 6.2 architecture, an application program that
communicates via LU 6.2 facilities. More generally, a program that processes
transactions.
transaction program instance(TPI). In SNA LU 6.2 architecture, a transaction program is
an application program that communicates via LU 6.2 facilities. More generally, a
program that processes transactions. A TPI is an instance of a transaction program. A
TPI can be created by a transaction program issuing a Tandem TP-READY verb, and
deleted by a transaction program issuing a TP-READY verb, an ABORT/STOP
command, or a file system CLOSE request.
type 2.1 node. In SNA, a node that can participate in advanced peer-to-peer
networking. It contains its own control point which enables it to establish
communication with other type 2.1 nodes without the intervention of a system
services control point.
unit of work (UOW) . A message sent by one process to request another process to
perform a single operation. Several units of work may be concatenated in a single IPC
message. UOWs are implemented through verbs.
UOW. See unit of work.
verb. In LU 6.2, a programming language element in the LU 6.2 application
programming interface that causes an LU 6.2 function to be performed. More
generally, the general name for a transaction program’s request for communication
services. See also control operator verb and conversational verb.
VTAM. Virtual Telecommunications Access Method.
XID. See Exchange Identifications.