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How many types of database triggers can be specified on a
table ? What are they ?

Answer Posted / nilesh

There are 2 types of triggers as per the execution goes
they are ROW LEVEL and STATEMENT LEVEL TRIGGERS

Then as per action triggers can be executed for three
actions as INSERT, UPDATE and DELETE

and trigger can also be executed before the action or after
the action . So with this we can have 12 diffrent triggers
they are: (6 Row level, 6 statement level)

ROW LEVEL
AFTER INSERT , BEFORE INSERT (2 Nos.)
AFTER UPDATE , BEFORE UPDATE (2 Nos.)
AFTER DELETE , BEFORE DELETE (2 Nos.)

STATEMENT LEVEL
AFTER INSERT , BEFORE INSERT (2 Nos.)
AFTER UPDATE , BEFORE UPDATE (2 Nos.)
AFTER DELETE , BEFORE DELETE (2 Nos.)

Is This Answer Correct ?    17 Yes 4 No



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