Fujitsu UDS/SQL V2.5 - page 147

SSL Linkage methods
U929-J-Z125-9-76 147
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Additional pointer from owner to its pointer array
MODE IS POINTER-ARRAY.....WITH PHYSI CAL LINK
The standard UDS/SQL link between an owner record and the pointer array 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 t he pointer array in the
owner record.
Figure 34: Additional pointer from owner → pointer array
This entry is not permitted in SYSTEM sets, where both th e function of the owner record
and of the DBTT is assumed by an anchor record.
. . . . . . . . .
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Moore
. . .
.
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Owner record DBTT Pointer array Member records
Beer
Cocoa
Milk
Primary
key
RSQ
+
PPP
Gin
Beer
Cocoa
Milk
Gin
.
.
. . .
.
.