[单选题]Which of the following is not responsibility of DBA(Data Base Administrator)?

正确答案 ：A

Database management system design

[单选题]In a certain cache system, the modified cache block is written to main memory only when the block is replaced.All of following are used to describe this policy EXCEPT

正确答案 ：D

write-through

[单选题]下列选项中不是预防死锁的措施的是

正确答案 ：C

使用银行家算法

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