Hp Integrity NonStop J-Series Manual de usuario descargar pdf (Pagina 112)

CREATING AND RUNNING A MULTIFILE APPLICATION

Associating and Linking Boxes

Figure 5-15 shows the partial contents of the files associated

with the application that displays the screen shown in

Figure 5-14. This figure also shows the records from each file

that qualify for the application-access path.

When the tree structure of an application has more than two

levels, records qualify for the application-access path as

follows:

1. The application can read or insert any record for the box at

the first level of the tree. Therefore, all records for this

box qualify for the application-access path.

2. The application can read or insert a record for a box at the

second level of the tree only if that record matches (has the

same join-field value) a record for a box at the first level

of the tree. Therefore, to qualify for the application-

access path, a record at the second level of the tree must

match any record at the first level of the tree.

3. The application can read or insert a record for a box at the

third level of the tree only if that record matches (has the

same join-field value) a qualified record for a box at the

second level of the tree. Therefore, to qualify for the

application-access path, a record at the third level of the

tree must match a qualified record at the second level of the

tree.

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Hp Integrity NonStop J-Series Manual de usuario Pagina 112