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Reads data from an open sequential file and assigns the data to variables.
读取打开的顺序文件中的数据,并将这些数据赋值给变量。
In the output step, the employee information needs to be mapped to the output sequential file.
在输出步骤中,需要将员工信息映射到输出顺序文件。
Higher space efficiency means files are less fragmented and provide better sequential file access.
较高的空间效率意味着文件的碎片较少,能够提供更好的顺序文件访问。
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