Hp Integrity NonStop J-Series Manual do Utilizador descarregar pdf (Página 102)

CREATING AND RUNNING A MULTIFILE APPLICATION

Associating and Linking Boxes

After you identify the level at which a box is to reside, you are

ready to supply a value for the TREE attribute.

Supplying a Value for the TREE Attribute

Although you can supply a value for the TREE attribute in several

ways, the examples in this discussion use the SET APPL command to

do so.

To supply values for the TREE attribute, you must:

• Associate a box with a level number

• Provide a LINK OPTIONAL clause for each box except the box at

the first level of the tree structure

Associating a Box With a Level Number. To define the level at

which a box resides in the tree, you associate the box name with

a level number (similar to a DDL level number). Valid values

for level numbers range from 1 to 50.

To define a box as being at the first level of the tree, specify

a level number that is lower in value than any other level number

in the tree. For example, consider the following box names and

associated level numbers:

06 employ-box 08 depends-box 08 coverage-box 10 location-box

The level numbers associated with these box names indicate that:

• "Employ-box" is at the first level of the tree structure

• "Depends-box" and "coverage-box" are at the second level of

the tree structure

• "Location-box" is at the third level of the tree structure

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Hp Integrity NonStop J-Series Manual do Utilizador Página 102