Hp Integrity NonStop J-Series User Manual download pdf (Page 105)

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101

CREATING AND RUNNING A MULTIFILE APPLICATION

Associating and Linking Boxes

Sample Two-Level Tree Structure. Figure 5-9 shows an example of

a two-level tree structure. This figure also shows the SET TREE

command that builds this tree structure.

TREE(01 employee

02 dependents LINK empnum TO OPTIONAL emp-no)

S5044-028

employee

empnum

empname

• • •

Level 1

Dependents

dep-key

emp-no

dependent-no

• • •

Level 2

Link between Boxes

Figure 5-9. Sample Two-Level Tree Structure

Figure 5-10 shows the screen displayed by an application

generated with this tree structure. Note that a field from the

"employee" box (the box at the first level of the tree structure)

appears first on the screen. The "dependents" box directly

follows the join field ("empnum") of the "employee" box. The

join field ("emp-no") of the "dependents" box does not appear on

the screen.

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Hp Integrity NonStop J-Series User Manual Page 105

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