Sequential-file meaning

A file that contains records or other elements that are stored in a chronological order based on account number or some other identifying data. In order to locate the desired data, sequential files must be read starting at the beginning of the file. A sequential file may be stored on a sequential access device such as magnetic tape or on a direct access device such as magnetic disk. Contrast with random file.
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A file which consists of the same record types that is stored on a secondary storage device. The physical sequence of records may be based upon sorting values of one or more data items or fields.
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