Pathway Products Glossary

Glossary
Compaq NonStop™ Pathway Products Glossary—426762-001
Glossary-29
server class
combination of hardware and software designed to provide services in response to
requests received from clients across a network. For example, Compaq’s NonStop™
Himalaya servers provide transaction processing, database access, and other services. (In
the Pathway manual set, the word “server” is generally used only when definition 1 is
meant; for definition 2, “system” is usually used instead of “server.”) See also client
,
requester, client/server model, and requester/server model.
server class. A set of duplicate copies of a single server process, all of which execute the
same object program. Server classes are configured through the PATHMON process or
the PXMCFG utility.
server-class send operation. The sending of a message to a Pathway server class by making
a call to a Pathsend procedure. The SERVERCLASS_SEND_,
SERVERCLASS_DIALOG_BEGIN_, and SERVERCLASS_DIALOG_SEND_
procedures perform server-class send operations. See also SEND operation
.
server group. A set of server classes in a Pathway/XM environment that is defined by a
name and can be managed as a group. When a PXMCOM command is given a group
name in place of a server-class name, PXMCOM sends the command to all server
classes in the group. See also terminal group
.
server NODE object. A configured object in a Pathway/XM environment that defines the
system resources and default object attributes used for servers in the Pathway/XM
environment. See also NODE object
and client NODE object.
session. A TCP/IP connection between the TCP and a Pathway/iTS web client.
SERVER object. A definition of a server class within the configuration of a PATHMON
environment or a Pathway/XM environment.
service. A function performed by a server process or program on behalf of a requester or
client. A server can perform one or several services. The concept of a service is built
into the design of the BEA TUXEDO system and the NonStop™ TUXEDO system; for
these products, a service is a module of application code that carries out a service
request.
SERVICE object. A configured object that represents a preconfigured set of node-
independent SERVER objects to be imported into a Pathway/XM configuration—for
example, to support third-party applications.
simple token. In the Subsystem Programmatic Interface (SPI), a token consisting of a token
code and a value that is either a single elementary field, such as an integer or a character
string, or a fixed (nonextensible) structure. See also extensible structured token
and
token (definition 2).
single-threaded. A programming model that provides a single thread of control within a
program. For example, a single-threaded server handles only one request at a time and
must complete that request before accepting another. See also thread
and multithreaded.