Which two statements are true about InnoDB auto-increment locking?（）<br>A:The auto-increment lock can be a table-level lock<br>B:InnoDB never uses table-level locks<br>C:Some settings for innodb_autoinc_lock_mode can help reduce locking<br>D:InnoDB always protects auto-increment updates with a table-level lock

Which two statements are true about InnoDB auto-increment locking?（）
A:The auto-increment lock can be a table-level lock
B:InnoDB never uses table-level locks
C:Some settings for innodb_autoinc_lock_mode can help reduce locking
D:InnoDB always protects auto-increment updates with a table-level lock

出自：Oracle认证

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