多项选择题
A.Binary backups are usually faster than text backups
B.Binary backups are usually slower than text backups
C.Text backups are human-readable while binary backups are not
D.Binary backups are not portable across different operating systems
单项选择题 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. Which method will reduce the number of file handles in use?（）
多项选择题 Which three data components are needed for point-in-time recovery?（）
单项选择题 You need to dump the data from the master server and import it into a new slave server. Which mysqldump option can be used when dumping data from the master server in order to include the master servers binary log information?（）