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多选题
Which two are true regarding MySQL binary and text backups?（）
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
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单选题A user executes the statement; PURGE BINARY LOGS TO 'mysql-bin.010'; What is the result?（）A
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