OSI/FTAM Programming Reference Manual

Glossary
HP NonStop OSI/FTAM Programming Reference Manual—528611-001
Glossary-12
grouping control.
grouping control. A mode of operation that allows your application to perform a sequence
of confirmed services in one FTAM event. The request primitives for these services are
bracketed with the F-BEGIN-GROUP and F-END-GROUP request primitives. The
grouped request primitives are concatenated and sent in a single request PDU. The
responder analyzes and retains its response to each of these requests until the group
is complete or until a state failure occurs. The responder then returns its responses as
a group.
grouping functional unit. A functional unit that provides for the combination of several
independent primitives to establish several regimes in one exchange.
Guardian process name. The external name by which the NonStop operating system.
identifies a process. This name is assigned when a process is created using the NAME
attribute. To operate on an HP Expand network, this name must be a maximum of five
ASCII characters, including the initial dollar sign ($).
hierarchical file model. A file structure with the following characteristics:
•
The file-access structure is an ordered tree.
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Each node within the structure is assigned zero or one data unit.
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Each node provides access to its subtree.
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A node can, optionally, be named.
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There are no restrictions on the number of levels, on the arc lengths, or on the
number of arcs originating from each node.
The access unit, or subtree, of a node in this model is called a file-access data unit
(FADU). FTAM-2 files have a two-level hierarchy of one root node and many
second-level nodes. FTAM-1 and FTAM-3 files have only a single root FADU. See
FADU (file-access data unit). and root FADU.
HP Tandem Advanced Command Language (TACL). The user interface to the HP
NonStop operating system. The TACL product is both a command interpreter and a
command language. Users can write TACL programs that perform complex tasks or
provide a consistent user interface across independently programmed applications.
IA5String. The character-string type of strings containing any of the 32 control characters,
94 displayable characters, the space character, and the delete character, as defined by
CCITT Recommendation T.50. These strings contain format effectors.
indication primitive. A primitive issued when a service user (entity) is to be informed about
an event. This is one of four types of service primitives. See service primitive.
indication procedure. A procedure called to retrieve the indication data after an indication
primitive has been received. See indication primitive.