Linkage methods SSL
150 U929-J-Z125-9-76
Additional pointer from owner to its list
MODE IS LIST.....WITH PHYSICAL LINK
The UDS/SQL standard connection between an owner record and the li st of its member
records is via the DBTT. The user can bypass the DBTT and save one page access by
specifying WITH PHYSICAL LINK, which generates a pointer to the list in the own er record.
Figure 36: Additional pointer from owner → list
This entry is ignored by the compiler in SYSTEM sets, where both the fu nction of the owner
record and the DBTT are assumed by an anchor record. The user is informed by a warning.
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Moore
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Owner record DBTT List
Beer
Cocoa
Milk
Gin . . .
. . .
. . .
.