What are Triggers?
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Answer Posted / sujanindian
Triggers is a self contained set of transact executable
statements which can be invoked during the operations such as
insert,update,delete can be performed in a database file.
We can able to add trigger in a physical file :
ADDPFTRG
to remove a trigger : RMVPFTRG
In the case of SQL/400 we can create trigger by ....
>>STRSQL
>>CREATE TRIGGER TRG_Name
after INSERT/DELETE/UPDATE On PF1
Insert Into PF2 Values ('RECORDS DELETED IN PF1')
>>Delete FROM PF1 Where Recordno = 10
>>SElect * FROM PF2.
In the above code, the records in the PF1 is deleted , at
once the trigger trg_name is fired and the given insert
statement is activated in pf2.
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