File access processing system.

摘要

The system can execute sequential access for a copied file in a data processing device (1) which includes a data processing unit (10) and an access processing unit (11 ). The data processing device is connected to an external storage device (2) having a file management table (21) and a copy file (22). The access processing unit includes : an access executing unit (12) for executing an access to the file management table and the copy file in the external storage device; a setting unit (14) for setting file organization information into the file management table, after the setting unit obtains the file organizatian information, which indicates whether the file is a record file or a stream file, by referring to the head information of the file when the copied file is first sequentially accessed; and a judgement unit (13) for detecting whether the file is a record file or the stream file by referring to the file organization information set into the file management table of the file when the copied file is sequentially accesssed. When the file is the stream file in accordance with the information detected by the judgement unit, the judgement is executed as the requested sequential access is the sequential access for the stream file, then the sequential access for the stream file is executed without referring to the head information of the stream file.