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單項(xiàng)選擇題

You upgraded Oracle Database 10g to Oracle Database 11g. How would this affect the existing users’ passwords?()  

A. All passwords automatically become case-sensitive.
B. All passwords remain non-case-sensitive till they are changed.
C. All passwords remain non-case-sensitive and cannot be changed.
D. All passwords remain non-case-sensitive until their password attribute in the profile is altered.

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