试题详情
- 单项选择题 Evaluate the following SQL statements that are issued in the given order：
What would be the status of the foreign key EMP_MGR_FK？（） A、 It would be automatically enabled and deferred.
B、 It would be automatically enabled and immediate.
C、 It would remain disabled and has to be enabled manually using the ALTER TABLE command.
D、 It would remain disabled and can be enabled only by dropping the foreign key constraint and re-creating it.
- C
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