Example 2: changing the location of the real logical child in a bidirectional logical relationship
The following figure shows the position change of a real logical child from one logically related database to another.
In both of these before
examples, occurrences of segment
B can exist that are physically, but not logically, deleted. The logical
child can be accessed from the logical path but not the physical path.
When unloading DBX, the HD Unload utility cannot access occurrences
of segment B that are physically, but not logically, deleted. Therefore,
you must write your own program to do this type of reorganization.