4851903 0580343 222 INTERNATIONAL ISO/IEC STANDARD 8211 Second edition 1994-10-01 Information technology --- Specification for a data descriptive file for information interchange Technologies de I'information - Spécifications pour fichier de données descriptif pour I'échange d'information IEC Reference number ISO/IEC8211:1994(E) Copyright International Organization for Standardization itted without license from IHS Not for Resale 69t hhE0950 E06t5%t ISO/IEC 8211:1994(E) Contents Foreword... Introduction .vili 1 Scope... 2 Normative references 3 Conformance.... 4 Definitions and abbreviations. 4.1 Definitions.. 4.2Abbreviations 5 Interchange file and logical record structure 6 5.1 File and logical record structure.. 5.1.1 interchange logical records... 5.1.2Paddingofrecordsandmediablocks 5.2Logicalrecords-leadersanddirectories.. 5.2.1 Logical record leader.. 8 5.2.1.1 record length field (LR RP 0-4) 8 5.2.1.2 leader identifier field (LR RP 6). 8 5.2.1.3 ISO/EC 8211 version number (LR RP 8) 8 5.2.1.4 Base address of field area (LR RP 12-16) 8 5.2.1.5 Entry map field (LR RP 20-23). 9 5.2.1.5.1 Size of field length field (LR RP 20) 9 5.2.1.5.2 Size of field position field (LR RP 21) 9 5.2.1.5.3Reserved for future standardization (LRRP22) 9 5.2.1.5.4 Size of field tag field (LR RP 23). 9 5.2.1.6 Alternate forms of counts and field positions 6 5.2.2 Logical record directory. 10 5.2.2.1 Field tag field. 10 5.2.2.2 Field length field .. 10 5.2.2.3 Field position field. 10 5.3 Logical record field areas 10 5.3.1 Field area of the DDR 10 5.3.2 The field areas of the DRs 11 5.3.2.1 User data fields 11 5.3.2.1.1 Elementary data fields. 11 5.3.2.1.2 Compound data fields 11 6 Description of user data types and structures 11 6.1 DDR leader fields related to data description 11 6.1.1 Interchange ievel field (DDR RP 5), 11 6.1.2 Inline code extension indicator (DDR RP 7) 12 6.1.3 Application indicator field (DDR RP 9) 12 6.1.3.1Referencetootherstandards 12 6.1.4 Field control length field (DDR RP 10-11) 12 6.1.5 Extended character set indicator field (DDR RP 17-19) 12 6.2 Special field tags (tags = 0...0 to 0...9) 12 6.2.1 File control field (tag = 0...0).. 12 6.2.1.1 Field control field 13 6.2.1.2 External file title field. 13 6.2.1.3 List of Field tag pairs 13 6.2.2 Record identifier field (tag = 0...1) 13 6.2.3 User application field (tag 0...2) 13 6.2.4 Announcer sequence or feature identifier field (tag 0...3) 13 6.2.5 Fields reserved for future standardization .. 13 6.2.6 Recursive tree LINKS field (tag = 0...9) 6.2.7 Order of special field tags in the DDR.. 14 6.3 Data descriptive fields in level 1 files . 14 ?ISO/1EC1994 All rights reserved. No part of this standard may be reproduced or utilized in any microfilm, without permission in writing from the publisher. Printed in Switzerland ght International Organization for Standardization Not for Resale 905803450T5 @ISO/IEC ISO/IEC 8211:1994(E) 6.4 Data descriptive fields in level 2 and 3 files. 14 6.4.1 Tabular summary of data descriptive fields of level 2 and 3 files 14 6.2 Field controls..... 15 6.4.2.1 Data structure code (RP 0). 16 6..2 Data type code (RP 1)..... 16 6.4.2.3 Auxiliary controls (RP 2-3).... 16 ....4 Printable graphics (RP 4..5).......... 16 6.5 Truncated escape sequence (RP 6.-8)... 16 6.4.3 Data field names, array descriptors and format controls. 16 6.4.3.1 Data field name........ 16 6.4.3.2Arraydescriptors. 16 6.4.3.2.1 Numeric array descriptor... 17 6.4.3.2.2 Subfield labels .. 17 6.4.3.2.3 Vectorlabels 17 6.4.3.2.4 Cartesian label.... 17 6.4.3.2.5 Description of concatenated structures 17 ...3 Format controls... 19 6.4.4Orderofarraydescriptors,labelsandarrays 21 6.4.4.1 Order of numeric array descriptors 21 6.4.4.2Order of cartesian labels..... 21 6.4.4.3 Storage order of array elements 21 7 Use of coded character sets. 22 7.1 Announcement of coded character set extension ... 22 7.1.1 Scope of active character sets 22 7.1.2 Length of fields and subfields... 22 7.1.