给出，文件、记录加锁解锁的方法及解决死锁问题的途径。
Methods of file locking and record locking or file unlocking and record locking or file unlocking and record unlocking were given.
给出，文件、记录加锁解锁的方法及解决死锁问题的途径。
Methods of file locking and record locking or file unlocking and record locking or file unlocking and record unlocking were given.
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