Define the file as recoverable. in cases where records have been inserted into the file, you may need to run a batch program to logically delete the inserted records.

 
  • 需要把文件定義成可恢復的.;一旦數據已經(jīng)被寫(xiě)進(jìn)文件;那么就需要通過(guò)批量程序來(lái)邏輯上刪除插入記錄
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