create trigger tri_emp
after insert on employees
for each row
insert into new values（：new.sno,:new.sname,:new.sex,:new.depart）
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create trigger tri_emp_delete
after delete on employees
for each row
delete from new where sno=:old.sno
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create trigger tri_emp_update
after update on employees
for each row
begin
delete from new where sno=:old.sno;
insert into new values（：new.sno,:new.sname,:new.sex,:new.depart）；
end;
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注意；的使用，如果在begin和end子句中有多条语句的话，每条句子后面都应该有一个分号。
……