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Medium allocation system for file

阅读:810发布:2021-03-27

专利汇可以提供Medium allocation system for file专利检索,专利查询,专利分析的服务。并且PURPOSE:To attain efficient, speedy access to a file by permitting a file generation, request to contain logical medium indication information, and allowing a data control system to decide on a physical medium and generate a file on the basis of the information. CONSTITUTION:In response to three instructions ALLOCATE of a user program 1, a data control system OS2 decides on a corresponding physical medium and then operates on converntional automatic file generation schedule when there is medium indication iformation included, or operates immediately on the conventional automatic file generation schedule when not. When the physical medium is determined, the OS2 sets a comparison table 3 for a logical medium and the physical medium. Thus, files W1 and W3 are set on the physical mediumI, and a file W2 is set on the physical medium II.,下面是Medium allocation system for file专利的具体信息内容。

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