Select the Truncate table action to delete all the existing rows in the Orders table before the data load operation starts.
在数据加载操作开始之前,选择truncate表操作删除orders表中的所有已有行。
The downside of this sort of operation is that db4o could accidentally truncate a value.
这种操作的缺点是,db4o 可能会意外地将一个值截尾。
Each operation on a file handle-open, read, write, rewind, truncate, and close, for example-affects the state of the file.
文件句柄上的每个操作(例如open、read、write、rewind、truncate和close)影响文件的状态。
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