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- 单项选择题在Oracle中,约束可以在DML语句执行之后立即生效,也可以延迟到事务处理提交时才生效。()语句可以让用户在事务处理中设置延迟约束的强制模式。
A、set constraint
B、set transaction
C、take constraint
D、take transaction
- A
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