问题描述：
[单选]
You have a server that has very limited memory but has a very large table．You will use mysqldump to back up this table．（）你的服务器内存非常有限，但是它的内存非常大表。你将使用mysqldump备份此表。Which option will ensure mysqldump will process a row at a time instead of buffering a set of rows？哪个选项可以确保mysqldump一次处理一行而不是缓冲一组行？
A．-- quick
B．-- skip-buffer
C．-- single-transaction
D．-- tab
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上一篇：While reviewing the MySQL error log， you see occasions where MySQL has exceeded the number of file handles allowed to it by the operating system．（）在查看MySQL错误日志时，您会看到MySQL超过了操作系统允许的文件句柄数。Which method will reduce the number of file handles in use？哪种方法可以减少使用中的文件句柄数？
下一篇：Consider the following( )Which statement best describes the meaning of the value for the key_len column？哪个语句最能描述key_len列的值的含义？
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