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create or replace trigger tri_name
before inser on table_a
for each row
insert into table_b(:new.col1,..,:new.coln);
end;

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create or replace trigger tri_name
before inser on table_a
for each row
insert into table_b(:new.col1,..,:new.coln);
end;

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SQL code:
CREATE TRIGGER [TRIGGER_UPDATE_TableA]
BEFORE INSERT ON [TableA]
FOR EACH ROW
INSERT INTO[TableB]();
END



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create or replace trigger trigger_update_name
before update on table_name
for each row
begin
insert into old_data_talbe values(:old.column_name,..);
end;

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create or replace trigger trigger_update_name
before update on table_name
for each row
begin
insert into old_data_talbe values(:old.column_name,..);
end;

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