FTAM/9000 Programmer's Guide

Chapter 11 431
Document Types and Constraint Sets
Document Types
FTAM-1 Document Type
FTAM-1 has only one FADU that contains zero or more text strings. An
FTAM-1 file contains only one string type, chosen from
FT_CL_GENERAL_STRING, FT_CL_IA5_STRING,
FT_CL_GRAPHIC_STRING, or FT_CL_VISIBLE_STRING (Figure 11-1)
Figure 11-1 FTAM-1 Document Type Structure
You can only read from or write to the whole data unit (not parts of it).
FTAM-1 uses the Unstructured constraint set to restrict the file model,
and therefore uses the Unstructured All access context (Figure 11-2).
Refer to the “Constraint Sets” and “Access Contexts” sections for detailed
information.
Node
Descriptor
Data Unit
Text String
FADU