ISO-2709-2008.pdf
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1、 Reference number ISO 2709:2008(E) ISO 2008 INTERNATIONAL STANDARD ISO 2709 Fourth edition 2008-07-01 Information and documentation Format for information exchange Information et documentation Format pour lchange dinformation Copyright International Organization for Standardization Provided by IHS u
2、nder license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:45:22 MDTNo reproduction or networking permitted without license from IHS -,-,- ISO 2709:2008(E) PDF disclaimer This PDF file may contain embedded typefaces. In accordance with Adobes licensing policy, this file may be
3、 printed or viewed but shall not be edited unless the typefaces which are embedded are licensed to and installed on the computer performing the editing. In downloading this file, parties accept therein the responsibility of not infringing Adobes licensing policy. The ISO Central Secretariat accepts
4、no liability in this area. Adobe is a trademark of Adobe Systems Incorporated. Details of the software products used to create this PDF file can be found in the General Info relative to the file; the PDF-creation parameters were optimized for printing. Every care has been taken to ensure that the fi
5、le is suitable for use by ISO member bodies. In the unlikely event that a problem relating to it is found, please inform the Central Secretariat at the address given below. COPYRIGHT PROTECTED DOCUMENT ISO 2008 All rights reserved. Unless otherwise specified, no part of this publication may be repro
6、duced or utilized in any form or by any means, electronic or mechanical, including photocopying and microfilm, without permission in writing from either ISO at the address below or ISOs member body in the country of the requester. ISO copyright office Case postale 56 CH-1211 Geneva 20 Tel. + 41 22 7
7、49 01 11 Fax + 41 22 749 09 47 E-mail copyrightiso.org Web www.iso.org Published in Switzerland ii ISO 2008 All rights reserved Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:45:22 MDTNo repr
8、oduction or networking permitted without license from IHS -,-,- ISO 2709:2008(E) ISO 2008 All rights reserved iii Foreword ISO (the International Organization for Standardization) is a worldwide federation of national standards bodies (ISO member bodies). The work of preparing International Standard
9、s is normally carried out through ISO technical committees. Each member body interested in a subject for which a technical committee has been established has the right to be represented on that committee. International organizations, governmental and non-governmental, in liaison with ISO, also take
10、part in the work. ISO collaborates closely with the International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 2. The main task of technical committees is t
11、o prepare International Standards. Draft International Standards adopted by the technical committees are circulated to the member bodies for voting. Publication as an International Standard requires approval by at least 75 % of the member bodies casting a vote. Attention is drawn to the possibility
12、that some of the elements of this document may be the subject of patent rights. ISO shall not be held responsible for identifying any or all such patent rights. ISO 2709 was prepared by Technical Committee ISO/TC 46, Information and documentation, Subcommittee SC 4, Technical interoperability. This
13、fourth edition cancels and replaces the third edition (ISO 2709:1996), which has been technically revised to incorporate specification of the use of ISO/IEC 10646 using 8-bit Unicode Transformation Format (UTF-8) encoding. Consequently, lengths are specified in terms of octets instead of characters.
14、 Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:45:22 MDTNo reproduction or networking permitted without license from IHS -,-,- Copyright International Organization for Standardization Provid
15、ed by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:45:22 MDTNo reproduction or networking permitted without license from IHS -,-,- INTERNATIONAL STANDARD ISO 2709:2008(E) ISO 2008 All rights reserved 1 Information and documentation Format for information exc
16、hange 1 Scope This International Standard specifies the requirements for a generalized exchange format which will hold records describing all forms of material capable of bibliographic description as well as other types of records. It does not define the length or the content of individual records a
17、nd does not assign any meaning to tags, indicators or identifiers, these specifications being the functions of an implementation format. This International Standard describes a generalized structure, a framework designed specially for communications between data processing systems and not for use as
18、 a processing format within systems. 2 Normative references The following referenced documents are indispensable for the application of this document. For dated references, only the edition cited applies. For undated references, the latest edition of the referenced document (including any amendments
19、) applies. ISO/IEC 646:1991, Information technology ISO 7-bit coded character set for information interchange ISO/IEC 6429:1992, Information technology Control functions for coded character sets ISO/IEC 10646:2003, Information technology Universal Multiple-Octet Coded Character Set (UCS) 3 Terms and
20、 definitions For the purposes of this document, the following terms and definitions apply. 3.1 character member of a set of elements used for the organization, control, or representation of data 3.2 data field characters recording the descriptive content of the record 3.3 directory index to the loca
21、tion of the fields within a record 3.4 directory map set of parameters specifying the structure of the entries in the directory Copyright International Organization for Standardization Provided by IHS under license with ISO Licensee=Boeing Co/5910770001 Not for Resale, 07/25/2008 03:45:22 MDTNo repr
22、oduction or networking permitted without license from IHS -,-,- ISO 2709:2008(E) 2 ISO 2008 All rights reserved 3.5 field variable length portion of the record containing a particular category of data, following the directory and associated with one entry of the directory NOTE A field can contain on
23、e or more subfields. 3.6 field separator control character that terminates the directory, record identifier, reference fields and data fields 3.7 tag three octets associated with a field and used to identify it 3.8 indicator first data element, if present, associated with a field supplying further i
24、nformation about the contents of the field, about the relationship between the field and other fields in the record, or about the action required in certain data manipulation processes 3.9 octet group of 8 consecutive bits also referred to as an 8-bit byte; it may represent one character or be part
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