创建触发器,修改触发器和删除触发器的命令分别是:()。
A、CREATE TRIGGER;ALTER TRIGGER;DROP TRIGGER
B、CREATE TRIGGER;UPDATE TRIGGER;DROP TRIGGER
C、CREATE TRIGGER;ALTER TRIGGER;DELETE TRIGGER
D、CREATE TRIGGER;UPDATE TRIGGER;DELETE TRIGGER
A、CREATE TRIGGER;ALTER TRIGGER;DROP TRIGGER
B、CREATE TRIGGER;UPDATE TRIGGER;DROP TRIGGER
C、CREATE TRIGGER;ALTER TRIGGER;DELETE TRIGGER
D、CREATE TRIGGER;UPDATE TRIGGER;DELETE TRIGGER
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