Answer Posted / k. a. purushotham
Basically there are three types of triggers,
Row and statement triggers
Before and after triggers
Insteadof triggers
Possible combination of these triggers
Before row trigger
After row trigger
Before statement trigger
After statement trigger
Instead of trigger is mainly for a view.
if we want to write a trigger in such a way that the
trigger action is to be on underlying base tables of a view,
when an DML statement (insert,update,delete)is issued
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