2. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 1 XFDU 2 Proposals Mathias Moucha ESA / GAEL Consultant

3. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 2 SAFE Project SAFE Specifications defined for:  More than 50 product types  7 different missions  23 different sensors (More than 200 XML Schemas produced) SAFE (Standard Archive Format for Europe) is a specialisation of XFDU

4. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 3 Specialising XFDU: encountered difficulties  metadataObject VS dataObject  metadataWrap VS fileContent  metadataReference VS fileLocation  Content Units pointers @dmdID @repID @pdiID dataObjectPointer/@dataObjectID

5. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 4 Return from SAFE experience  Information Package Map could be simpler  metadataObjects and dataObjects could become « objects »

6. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 5 Let’s take an example….

7. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 6 A product to be XFDU packaged:

8. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 7 The Logical Model

9. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 8 The Physical Model

10. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 9 Introducing RDF RDF (Resource Description Framework) is a language for representing information about resources [W3C]. The development of RDF has been motivated by the following uses: (…) to do for machine processable information (application data) what the World Wide Web has done for hypertext [W3C].

11. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 10 RDF Graph Data Model

12. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 11 RDF Graphs for Processing Log

13. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 12 Processing Log (Information Package Map part) (…)

14. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 13 Processing Object (…) ESA/GAEL 2006-06-04T15:27:50Z (…)

15. CCSDS Workshop – Rome - June 2006 – XFDU 2 Proposals ESA / GAEL Consultant Page 14 Conclusion  Single Object Section  Simple objectType (only wraps or references)  Unified mechanism for Information Package Map pointing Objects; allows any qualification of a relationship  Use of standardized RDF