Create delete trigger &

The delete trigger deletes data records from the target tables. As soon
as application programs delete data records from the original dataset,
the corresponding data records are also deleted from the target tables.
Using the indicator field, the trigger first checks whether the data
record was really converted. A delete operation is only triggered if
this is the case.
Note: Changing the key value of a data record is the same as logically
deleting and adding a new data record. Such a logical delete operation
is executed by the update trigger and not by the delete trigger.

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