在利用日志文件进行数据库恢复时,对未完成的事务应做撤销(UNDO)处理,而对已完成的事务应做______处理。
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不同的数据库系统采用的日志文件格式并不完全一样,归纳起来有两种:以记录为单位的日志文件和以为单位的日志文件。
Which one of the following sentences is not the correct response to “How are you?”
A. Fine, Thanks
B. Very well.
C. Not too good.
D. I haven’t seen you for ages.
A: Long time no see. Pleased to see you again. B: ________________
A. Pleased to see you, too
B. Thanks.
C. My pleasure.
D. How do you do?