BS ISO BRITISH STANDARD AEROSPACE SERIES 22643:2003 Space data and information transfer systems Data entity dictionary specification language (DEDSL) - XML/DTD Syntax ICS 49.140 BSi NOCOPYINGWITHOUTBSIPERMISSIONEXCEPTASPERMITTEDBYCOPYRIGHTL British Standards BS ISO 22643:2003 National foreword This British Standard reproduces verbatim IS0 22643:2003 and implements it as the UK national standard. The UK participation in its preparation was entrusted by Technical Committee ACE/68, Space systems and operations, to Subcommittee ACE/68/-/7, Space data and information transfer systems, which has the responsibility to: aid enquirers to understand the text; present to the responsible international/European committee any enquiries on the interpretation, or proposals for change, and keep the UK interests informed; monitor related international and European developments and promulgate them in the UK. A list of organizations represented on this subcommittee can be obtained on request to its secretary. Cross-references The British Standards which implement international publications referred to in this document may be found in the BSI Catalogue under the section entitled "International Standards Correspondence Index", or by using the “Search" facility of the BSI Electronic Catalogue or of British Standards Online. This publication does not purport to include all the necessary provisions of a contract. Users are responsible for its correct application. Compliance with a British Standard does not ofitself confer immunity from legal obligations. Summary of pages This document comprises a front cover, an inside front cover, the ISO title page, pages ii and ii, a blank page, pages 1 to 99 and a back cover. The BSI copyright date displayed in this document indicates when the document was last issued. Amendments issued since publication This British Standard was published undertheauthority Amd. No. Date Comments of the Standards Policy and Strategy Committee on 26 June 2001 C BSI 26 June 2001 ISBN 0 580 42108 2 BS ISO 22643:2003 INTERNATIONAL ISO STANDARD 22643 First edition 2003-03-15 Space data and information transfer systems Data entity dictionary specification language (DEDSL)- XML/DTD Syntax Systemes de transfert des informations et données spatiales Langage de spécification pour le dictionnaire d'entites de données - Syntaxe XML/DTD Reference number ISO 22643:2003(E) so BS ISO 22643:2003 ii BS ISO 22643:2003 Foreword IsO (the International Organization for Standardization) is a worldwide federation of national standards bodies International Electrotechnical Commission (IEC) on all matters of electrotechnical standardization. InternationalStandardsaredraftedinaccordancewiththerulesgivenintheISO/lECDirectives,Part2 The main task of technical committees is to 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 rights. IsO shall not be held responsible for identifying any or all such patent rights. (CCSDS) (as CCSDS 647.3-B-1, January 2002) and was adopted (without modifications except those stated in Clause 2 of this International Standard) by Technical Committee ISO/TC 20, Aircraft and space vehicles, Subcommittee SC 13, Space data and information transfer systems ii BS ISO 22643:2003 blank BS IS0 22643:2003 Space data and information transfer systems Data entity 1 Scope This International Standard specifies the requirements for an extensible-markup-language (XML)/document- type-declaration (DTD) syntax for a data entity dictionary specification language (DEDSL). The scope and field of application are furthermore detailed in subclauses 1.1 and 1.2 of the enclosed CcsDS publication 2 Requirements following pages), which is adopted as an International Standard: CcSDS 647.3-B-1, January 2002, Space data and information transfer systems -