TS/MP System Management Manual (G06.24+, H06.03+)

Glossary
NonStop TS/MP System Management Manual—541819-001
Glossary-12
mixed data item
mixed data item. A data item that contains both single-byte and double-byte characters; in
a COBOL or SCREEN COBOL program, these data items are declared as PIC X.
modified data tag (MDT). In SCREEN COBOL, a bit that is set or reset to indicate whether
data in an associated field is to be sent to the computer from the terminal.
multithreaded. A programming model that provides more than one thread of control within
a program. Multithreading allows multiple sequential processing tasks to be executed
concurrently within a process: for example, a terminal control process (TCP). See also
thread and single-threaded.
native System/T client. In the NonStop TUXEDO environment, a client program that
executes in the Open System Services (OSS) environment and communicates directly
with System/T. An example of this type of client is the Pathway translation server for
the NonStop TUXEDO system. Also called a NonStop TUXEDO native client.
nested server. A server that acts as a requester by sending requests to other servers.
In the Pathway environment, such requests are made by calls to Pathsend procedures.
nld utility. A utility that collects, links, and modifies code and data blocks from one or more
object files to produce a target TNS/R native object file.
node. A Tandem NonStop system that is part of an Expand network. The name of the node,
also called the system name, is the first of four parts of a file name in the Guardian
environment. See also Expand networking software.
no-early-reply rule. The rule that states that when a server process reads a request
message, it should completely process the request before it replies to it.
nondedicated device. A term formerly used for a terminal or other input/output device on
which a Pathway application could be started from PATHCOM with a RUN PROGRAM
command. The RUN PROGRAM command results in the creation of a temporary
TERM object to control the terminal. (No new term replaces this term; instead, the
manual text now refers to such devices as those associated with temporary TERM
objects.) See also dedicated device and temporary TERM object.
noninteractive mode. An operating mode in which commands are entered through a
command file.
NonStop Kernel. See Tandem NonStop Kernel.
NonStop processing. On Tandem NonStop systems, processing characterized by
continued operation even when a component fails, when equipment is being repaired
or replaced, or while new processors or peripheral devices are being added to the
system. In the Guardian environment, NonStop processing is provided by means of
fault tolerance and process pairs.