If TDQs are selfdestructive then why they are used?
AND
Why TSQs are preferred over TDQs?

Answer Posted / rajesh dutta

TDQ are mainly used for Automatic task initiation where a
transaction is intiatiated once a trigger level is
reached.Trigger level is the max no of item TDQ can hold at
time after which transaction starts and once all the items
are read ,automatically deleted.And again Until the trigger
level is reached the transaction does not starts and this
process continues. Mainly used for request processing.

Correct me if I am Wrong...

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