Pathway Products Glossary

Glossary
Compaq NonStop™ Pathway Products Glossary—426762-001
Glossary-3
CISC
used in the event of a takeover by a backup process to allow the backup process to
maintain fault-tolerant operation.
CISC. See complex instruction-set computing (CISC)
.
client. An application program that requests services to be performed. In discussions of the
Pathway environment, this term is used to refer to the part of an application that runs on
some other vendor’s hardware, such as a personal computer, Macintosh computer,
UNIX workstation, or mainframe computer system, and makes requests of a server
process. See also requester
, server, and client/server model.
client NODE object. A configured object that defines the system resources and default
object attributes used for terminal requesters and PATHMON processes in the
Pathway/XM environment. See also NODE object
and server NODE object.
client/server model. A model for distributing applications. In general, but not always, in this
model the client process resides on a workstation and the server process resides on a
second workstation, minicomputer, or mainframe system. Communication takes the
form of request and reply pairs, which are initiated by the client and serviced by the
server. (A server can make requests of another server, thus acting as a client.)
Client/server computing is often used to connect different types of workstations or
personal computers to a host computer system by means of supported communications
protocols. See also requester/server model
.
client/transaction server model. A model for client/server applications. The
client/transaction server model is the model of choice for high-volume OLTP
applications in which transaction volume is great and the processing requirements
change infrequently.
On NonStop™ Himalaya systems, an application following this model divides
processing between a client running on a workstation and servers running on a
NonStop™ Himalaya system. The client handles the user interface and business logic
and processing. The servers store information for use by the client and handle database
input and output functions. Interprocess communication (IPC) messages transfer data
between client and server.
COBOL85. The Compaq compiler and run-time support for the American National
Standards Institute (ANSI) programming language COBOL, X.3.23-1985, on
NonStop™ Himalaya systems. Pathway server processes are often written in this
language.
cold start. (1) The operation that starts a PATHMON environment for the first time. This
operation either creates a new PATHMON configuration file (PATHCTL file) that
defines the PATHMON environment and its objects or overwrites an existing
PATHMON configuration file (which effectively creates a new PATHMON
environment). See also cool start. (2) The operation that starts a Pathway/XM
environment for the first time. This operation uses the configuration information in the
SuperCTL file to build new PATHMON configuration files (PATHCTL files) for the
PATHMON processes. See also cool start
, SuperCTL file, and PATHMON
configuration file.