NET/MASTER Management Services (MS) Command Reference Manual

Glossary
Glossary–10 115412 Tandem Computers Incorporated
element header. The beginning of an element. An element header consists of two parts:
a length field and a key field.
EM process. See event management services process.
emergency shutdown. A shutdown operation started by the NonStop NET/MASTER MS
control process (NCP). See also immediate shutdown and normal shutdown.
EMS. See Event Management Service.
EMS event collector. A Guardian process, part of the Tandem EMS subsystem, that
collects and stores messages. The default EMS event collector is $0.
EMS event distributor. An EMS process that distributes event messages from event logs
to requesting management applications, to a collector on another node, or to printers,
devices, or files.
EMS message. A message generated internally by EMSPROC and identified by the
letter E when displayed on an OCS window.
EMS message prefix. The identifier that can precede a message from the EMS subsystem
when it is displayed on an OCS window. The prefix identifies the Tandem system or
the Guardian process that generated the message.
EMSP. See Event Management Service Process.
EMSPROC. A system-level NCL procedure that intercepts and processes messages from
the EMS distributor and, if configured, from the Inter-System Routing (ISR) interface.
EMSPROC runs in the background processing environment controlled by the Event
Management Service Process (EMSP) virtual user.
enclosed element. An element inside another element.
enclosed MDO variable. A mapped data object variable inside another mapped data
object variable.
enclosing element. An element that contains one or more elements.
enclosing MDO variable. A mapped data object variable that contains one or more
mapped data object variables.
encoding rule. A rule used by Mapping Services to determine the order and
composition of the length field and the key field of a map header or element header.
Enscribe. A Tandem disk file access method that is supported by the Guardian file
system. Two types of Enscribe files are accessible from NCL: structured and
unstructured.
entry-sequenced UDB. A structured Enscribe user database consisting of variable-length
records that are always appended to the file in the order in which they are presented.
The records in an entry-sequenced user database are arranged physically and logically
in the order in which they are added to the file.
enumerated MDO variable. A mapped data object variable that stores raw data
representing a symbolic name.