Pathway Products Glossary

Glossary
Compaq NonStop™ Pathway Products Glossary—426762-001
Glossary-2
ATMI
ATMI. See Application-Transaction Monitor Interface (ATMI).
attributes. Those characteristics of an object that influence the operation of that object and
establish its capabilities.
audited file. A database file that is flagged for auditing by the TMF subsystem; auditing is
the monitoring of transactions in preparation for recovery efforts.
audit trail. A record of database changes that can be used by the TMF subsystem to rebuild a
database in the event of a hardware or software failure. An audit trail is also known in
the industry as a transaction log.
automatic load balancing. See load balancing
.
availability. The amount of time an application running on a NonStop™ Himalaya system
can be used effectively by a user of that application.
B
backup process. The member of a process pair that takes over the application work when the
primary process fails. See also primary process, process pair, and checkpoint message.
base screen. In SCREEN COBOL, a screen that occupies the entire physical display area of a
terminal and can be displayed independently of other screens. This type of screen can
contain areas on which overlay screens are displayed. See also screen
and overlay
screen.
batch processing. A method of transaction processing in which transactions are first grouped
together and then processed at regular intervals. See also online transaction processing
(OLTP).
block mode. A terminal operating mode in which data is read from the terminal and
displayed on the terminal one screen at a time. See also conversational mode
.
BUILDCFG. A command file that collects information about a Pathway application so that
the PXMCNVRT utility can be used to migrate the application to Compaq NonStop™
Pathway/XM. See also PXMCNVRT utility
.
C
cache. A temporary storage buffer.
cascading server. A term formerly used for a nested server. See nested server
.
checkpoint message. In the Guardian environment, a message sent by a primary process to
its backup process that keeps the backup process up to date on the state of the
application. A checkpoint message provides a snapshot of process activity that can be