OSI/MHS Orientation Guide

Glossary
OSI/MHS Orientation Guide—424829-001
Glossary-15
NonStop SQL. A relational database management system that combines the ease of use of the
Structured Query Language (SQL) with the application performance provided by the
Compaq NonStop Kernel.
NonStop tools. The utility programs that perform everyday activities including editing,
formatting, restoring, backing-up, sorting, spooling, binding, compiling, and installing.
NonStop Transaction Manager/MP (NonStop TM/MP). A Compaq software product that
provides transaction protection and database consistency in demanding online
transaction processing (OLTP) and decision-support environments. It gives full
protection to transactions that access distributed NonStop SQL and Enscribe databases,
as well as recovery capabilities for transactions, online disk volumes, and entire
databases. The component of NonStop TM/MP that provides these features is the TMF
subsystem. See also Transaction Management Facility (TMF) subsystem.
NonStop Transaction Services/MP (NonStop TS/MP). A Compaq product for online
transaction processing on NonStop Himalaya servers consisting of the PATHMON
process, the LINKMON process, the PATHCOM process and interface, and the
Pathsend procedures. NonStop TS/MP, together with NonStop Transaction
Manager/MP (TM/MP), forms the foundation for Compaq’s new open transaction
processing products.
NSAP (network service access point). The logical point at which Network Layer services are
provided by the Network Layer entity to the Transport Layer entity.
NSAP address. The global, network-unique address of an end system’s network service
access point, through which Network Layer services are provided to local users, and
through which Transport Layer services are provided to remote systems.
NSDS Scriptor. The component of NSDS that provides a batch interface to the directory.
The Scriptor provides a means of encoding XDS operations without writing a directory
application.
NSDS Viewer. The component of NSDS that provides a graphical user interface to the
directory.
null object. An object type, used in management interfaces, that occurs when a subsystem
supports exactly one object of a given type and the type of that object can be deduced
from the name. In OSI/MHS, the object type need not be specified in the VERSION or
NAMES command: the object is understood to be the MHS manager. The null object
has no inherent hierarchical relationship to any other object.
null value. A value indicating that a program has made no explicit assignment to a variable or
field. In DSM programmatic interfaces, a field in a structure has a null value if the
application has made no explicit assignment to that field after calling the SSNULL
procedure to initialize the structure.
numeric O/R address. An O/R address that identifies a user by a number. See also
mnemonic O/R address.
OBEY file. See command file.
object. In general, an entity subject to independent reference or control, and having well-
defined characteristics or behavior.