ENABLE Reference Manual

ENABLE ATTRIBUTES
TREE Attribute
Upon execution, the "dept-detail" application will display the
screen shown in Figure 4-13.
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DEPT-DETAIL
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* DEPT-NO _______
EMPNUM _______
* DEPENT-KEY
DEP-NO _____
DEP-NAME ___________________
EMPNAME ___________________
* DEPT-NAME ____________
DEPT-LOC __________________________
Ready for input F3 for Help, shift F16 to exit
Join field for
depart-box
Join field for
employ-box
Labels and fields
for depends-box
Remaining label and
field for employ-box
Remaining labels and
fields for depart-box
Figure 4-13. Sample Terminal Screen With Three Boxes
Example of the TREE Attribute With Four Boxes. When you build
a tree structure for four boxes, you must identify the links that
can exist between the boxes and determine the level at which each
box is to reside in the tree structure.
Suppose, for example, that you want to generate an application
that displays information about departments, the employees that
belong to those departments, the dependents of those employees,
and the type of benefit coverage that the employees have. This
application must use the boxes described earlier in this section:
"depart-box," "employ-box," and "depends-box." In addition, the
application must use "benefits-box," a box that represents a file
containing benefit-coverage information for each employee.
Figure 4-14 shows the part of the record descriptions associated
with these boxes and also shows the partial contents of the files
that these boxes represent.
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