Pathway Products Glossary

Glossary
Compaq NonStop™ Pathway Products Glossary—426762-001
Glossary-27
reserved word
reserved word. A word that can be used only as a keyword.
resources. The components of a computer system that work together to process transactions.
Terminals, workstations, CPUs, memory, I/O controllers, disk drives, processes, files,
and applications are examples of resources.
response time. The amount of time it takes to receive a response from the system after
initiating a request message (for example, by pressing a function key).
retryable operation. An operation that can be interrupted and repeated an indefinite number
of times without affecting the consistency of the database; for example, all read
operations are retryable.
RISC. See reduced instruction-set computing (RISC)
.
rolling configurations. A feature of Pathway/XM that allows users to migrate to a new
Pathway/XM configuration online. To use this feature, you create a new configuration
source file that includes an INVENTORY statement. You then use PXMCHK to verify
references in the SuperCTL file and use PXMCOM to execute the migration plan online.
See also migration plan
, PLAN object, and PXMCHK utility.
root directory. An OSS directory associated with a process that the system uses for
pathname resolution when a pathname begins with a slash (/) character. See also OSS
pathname.
router process. A listener process, provided as part of the Pathway/iTS product, that
manages links between browser-based web clients using the HTTP or raw sockets
protocol, or intelligent devices using the raw sockets protocol, and the TCPs. The router
processes are listener processes that detect connection requests on a socket or an HTTP
connection, determine from the TCP which TERM objects are available, and distribute
the requests to the TERM objects. Thereafter, the clients or requesters communicate
directly with the assigned TERM objects. The TERM object selection is designed to
maintain a balanced workload. See also TERM object
.
RSC/MP. A Compaq software product that facilitates client/server computing, allowing
personal computer (PC) or workstation applications running under Microsoft®
Windows® software or the MS-DOS or OS/2 operating system to access Pathway server
classes and Guardian processes. Transactions are transmitted from the PC or
workstation application (the client) to a Pathway application running on a NonStop™
Himalaya system (the server) by means of a supported communications protocol, such
as NETBIOS, TCP/IP, or an asynchronous connection.
S
scalability. The ability to increase the size and processing power of an online transaction
processing system by adding processors and devices to a system, systems to a network,
and so on, and to do so easily and transparently without bringing systems down.
Scalability is also sometimes called expandability.