TS/MP System Management Manual (G06.24+, H06.03+)

Glossary
NonStop TS/MP System Management Manual—541819-001
Glossary-2
attributes
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.
availability. The amount of time an application running on a Tandem system can be used
effectively by a user of that application.
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.
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
used in the event of a takeover by a backup process to allow the backup process to
maintain fault-tolerant operation.
CICS. See Customer Information Control System (CICS).
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.