CAN/CSA-ISO/IEC 21000-20:18 (R2022)

Foreword
Introduction
1 Scope
2 Normative References
3 Terms, definitions and abbreviated terms
4 Conventions
5 Relationship to other ISO/IEC 21000
6 Overview
7 Contract Structured Representation
Annex A (normative) - Schemas
Annex B (informative) - Examples of CEL Contracts
Bibliography

Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T). Scope This document specifies a language for representing contracts in the Multimedia Framework formed for the transaction of MPEG-21 Digital Items or services related to the MPEG-21 Framework. Contract Expression Language (CEL) aims at digitally representing the agreements made in environments using ISO/IEC 21000. These agreements are contracts for transactions of content packed as Digital Items, as well as services provided around this content. The range of contracts under scope are as follows: contracts about transactions on rights for the exploitation of content as MPEG-21 Digital Items; contracts about the provision of MPEG-21-based services, i.e. delivery, identification, encryption, search and others. The aspects represented by CEL contracts include the following: the textual clauses, in natural language as they are in the narrative contract, duly structured; the operative clauses, as computer language expressions.

CSA Preface Standards development within the Information Technology sector is harmonized with international standards development. Through the CSA Technical Committee on Information Technology (TCIT), Canadians serve as the SCC Mirror Committee (SMC) on ISO/IEC Joint Technical Committee 1 on Information Technology (ISO/IEC JTC1) for the Standards Council of Canada (SCC), the ISO member body for Canada and sponsor of the Canadian National Committee of the IEC. Also, as a member of the International Telecommunication Union (ITU), Canada participates in the International Telegraph and Telephone Consultative Committee (ITU-T). For brevity, this Standard will be referred to as “CAN/CSA-ISO/IEC 21000-20” throughout. At the time of publication, ISO/IEC 21000-20:2016 is available from ISO and IEC in English only. CSA Group will publish the French version when it becomes available from ISO and IEC. This Standard was reviewed by the CSA TCIT under the jurisdiction of the CSA Strategic Steering Committee on Information and Communications Technology and deemed acceptable for use in Canada. From time to time, ISO/IEC may publish addenda, corrigenda, etc. The TCIT will review these documents for approval and publication. For a listing, refer to the Current Standards Activities page at standardsactivities.csa.ca. This Standard has been formally approved, without modification, by the Technical Committee and has been developed in compliance with Standards Council of Canada requirements for National Standards of Canada. It has been published as a National Standard of Canada by CSA Group. Scope This document specifies a language for representing contracts in the Multimedia Framework formed for the transaction of MPEG-21 Digital Items or services related to the MPEG-21 Framework. Contract Expression Language (CEL) aims at digitally representing the agreements made in environments using ISO/IEC 21000. These agreements are contracts for transactions of content packed as Digital Items, as well as services provided around this content. The range of contracts under scope are as follows: contracts about transactions on rights for the exploitation of content as MPEG-21 Digital Items; contracts about the provision of MPEG-21-based services, i.e. delivery, identification, encryption, search and others. The aspects represented by CEL contracts include the following: the textual clauses, in natural language as they are in the narrative contract, duly structured; the operative clauses, as computer language expressions.