FTAM/9000 Programmer's Guide

Glossary 449
Glossary
Access Context A set of
restrictions that dictates how the
information in a file is accessed;
you can specify access contexts
only when reading a file.
Activity Attributes Attributes
that define the properties that
exist only while a specific FTAM
connection is being used; these
attributes are not part of the file.
Application Entity A uniquely
identified component of your
application program that
associates it with OSI; may be an
FTAM initiator or FTAM
responder.
Application Interface Your
means of accessing the FTAM
services (e.g., ft_select()).
Application Service Element
(ASE) Any of the services provided
to you in the Application layer of
the OSI model (e.g., FTAM and
ACSE).
Association An ISO term,
synonymous with ``connection.''
Association Control Service
Element (ACSE) An OSI layer
seven protocol that provides
association establishment, abort,
and association termination.
Attribute Information that states
a property of a file and takes a set
of defined values, with each value
having a defined meaning.
connection_id A unique
identifier of a connection for the
duration of that connection.
Constraint Set A set of
restrictions that specify the
allowable file structures and the
ways in which access actions can
modify the structures.
Context Free (CF) Function A
function that does not depend on
the use of other FTAM functions.
Context Sensitive (CS)
Function A function that depends
on the use of other FTAM
functions; you must call context
sensitive functions in a specific
order.
Data Control Block (DCB)
Data structures used for passing
information between user
application programs and FTAM
applications entities. The DCBs
vary, depending on the function
call.