The______scheme in a database system is responsible for the detection of failures and for the restoration of the database to a s

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问题 The______scheme in a database system is responsible for the detection of failures and for the restoration of the database to a state that existed before the occurrence of the failure.
A.query
B.test
C.check
D.Recovery

选项 A、 
B、 
C、 
D、 

答案D

解析
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