CSA ISO/IEC 21000-3 : 2004 : INC : AMD 1 : 2007 : R2012

Foreword
Executive Summary for MPEG-21
1 Scope
2 Normative references
3 Terms and definitions
4 Identification of Digital Items and their Parts
5 Identification of Description Schemes
Annex A (normative) - Requirements for the Registration
        Authority for Digital Item Identification Systems
Annex B (informative) - Interoperability Considerations
        on Resolution Systems
Annex C (informative) - List of existing Identification and
        Description Schemes
Annex D (informative) - Using ISO/IEC 21000-3 in the MPEG-21
        Multimedia Framework
Annex E (informative) - Relationships Element Employment
        Example
Annex F (informative) - Patent statements
Bibliography

Defines: - How to uniquely identify Digital Items (and parts thereof); - How to uniquely identify IP related to the Digital Items (and parts thereof), for example abstractions; - How to express the relationship between the two above identifiers; - How to deal with varying levels of functional granularity for Digital Item identifiers; - How to uniquely identify Description Schemes; - The relationship between Digital Items (and parts thereof) and existing identification systems. Annex C contains a list of relevant identification systems. This is not an exhaustive list and is subject to change over time; - The relationship between Digital Items (and parts thereof) and relevant description schemes. Annex C contains a list of relevant description schemes. This is not an exhaustive list and is subject to change over time.