SIS SS 63 68 03-1983 信息处理．信息互换用可折叠磁盘盒卷结构和文件结构和标签

标准号：SIS SS 63 68 03-1983
中文标准名称：信息处理．信息互换用可折叠磁盘盒卷结构和文件结构和标签
英文标准名称：Information processing — Filé structure and labelling of flexible disk cartridges for information interchange
发布日期：1984/12/25 12:00:00
实施日期：1999/12/31 12:00:00
适用范围：This International Standard specifies requirements for the file structure and the labelling of flexible disk cartridges for the in-terchange of information between users of different information processing systems.This International Standard specifiesa) recorded labels to identify files, file sections, and volumes of flexible disk cartridges;b) basic characteristics of the blocks containing the records constituting the file;c) the file structure.This International Standard specifies three nested levels of interchange so thata) at the first level, called BASIC INTERCHANGE (Bl), it is possible to interchange data by using a minimum set of the facilities provided;b) at the second level, called EXTENDED INTERCHANGE LEVEL 1 (ED, it is possible to interchange data using the minimum set together with blocks having a length greater than that of the physical records and with blocked fixed-length records;c) at the third level, called EXTENDED INTERCHANGE LEVEL 2 (E2), it is possible to interchange data using the facilities of levels Bl and E1 together with variable-length records and segmented records.Annex A describes examples but does not form part of this standard.Annex B gives disk parameter values derived from flexible disk data interchange standards, but does not form part of this standard.