NET/MASTER RMS Management and Operations Guide

Glossary
Glossary–18 115415 Tandem Computers Incorporated
logical name. A sequence of characters that can be used as an alias for a device name.
logical NOT. The Boolean operator that negates 1 (TRUE) to 0 (FALSE) and FALSE to
TRUE when evaluating two terms in an expression.
logical unit (LU). An IBM term for a unit through which end user application programs
and I/O devices access the SNA network to communicate with other end users. An
LU2 is an IBM 3270 or compatible terminal using SNA protocols.
logon screen. The screen where a real user enters a user ID and password to log on to
NonStop NET/MASTER MS.
logon screen banner. The collective name for the sixteen logon screen banner lines.
logon screen banner line. A line on the logon screen available to display a banner when
NonStop NET/MASTER MS is started. The logon screen has sixteen lines available to
display banner lines.
logon screen title. A line on the logon screen available to display a title when NonStop
NET/MASTER MS is started. The second line of the logon screen is available to
display a title.
LOGP. See Activity Log Process.
LOGPROC. A system-level NCL procedure that intercepts and processes messages
destined for the NonStop NET/MASTER MS activity log. LOGPROC runs in the
background processing environment controlled by the Activity Log Process (LOGP)
virtual user.
LU. See logical unit.
manager. A process to which command messages for associated subjects are routed. In
event messages, the managers make subjects of the same name unique. The
ZEMS-TKN-MANAGER token contains the manager.
map. A set of definitions used by Mapping Services that together describe the entire
structure of some item of data.
map definition record. A record in the NonStop NET/MASTER MS map file that
describes the structure of a map.
map file. The disk file that holds all the definitions of all maps known to NonStop
NET/MASTER MS.
map header. The beginning of a map. A map header consists of two parts: a length
field and a key field.
mapped data. Data that are structured in a predefined way by using a map.
mapped data object (MDO) variable. A variable containing a data structure that Mapping
Services can understand using a map.
mapped UDB. A user database where data is mapped. Components of the map describe
the length of the data in a record and the fields. The default map used by NCL is
called $NCL.