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单选题 Ensuring the atomicity and durability properties of a transaction is the responsibility of the database system itself, specifically of the ______
学科：数据库原理及应用
时间：2023-11-25 09:11:05
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题目1单选题
Ensuring the atomicity and durability properties of a transaction is the responsibility of the database system itself, specifically of the ______A. Concurrency-control managerB. Recovery managerC. Integrity managerD. Buffer manager
题目2单选题
When a system crash occurs, redoing/undoing all transactions recorded in the log can be very slow. Streamline recovery procedure by periodically performing ______A. Share-lockB. loggingC. DeadlockD. Checkpointing
题目3单选题
The log is a sequence of log records recording all the update activities in the database. Whenever a transaction performs a write, it is essential that ______A. the log record for that write be created and added to the log, after the database is modifiedB. the log record for that write be created and added to the log, before the database is modifiedC. the log record for that write be created and added to the log, as soon as the database is modifiedD. the log record for that write be created and added to the log, time is not important
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