Information Architecture WG:Report of the Fall 2005 Meeting

September 16, 2005

Dan Crichton, ChairNASA/JPL

Executive Summary

• Six people attended the IA meeting from JPL, GSFC, Marshall and CSA.

• The draft Information Architecture Green Book was discussed including the updates from the NASA TIM that occurred in August. There continues to be more convergence between GSFC and JPL with respect to the relationship between IA and OAIS. Chapter 2, the information model, requires more substantial updates than chapter 3, the functional information management components.

• The afternoon session was canceled in lieu of a discussion on XML best practices

Progress Achieved

• Significant progress has been achieved since July and we have received quite a few comments. Participants seems willing to continue their involvement and to see the green book get published.

• Some discussion occurred on the need to develop more examples.

• Some discussion occurred on the need for a TIM on registries, at least at the NASA level.

Schedule (from March 2005 charter)April 2005 IAWG meeting at CCSDS Spring Meetings in Athens,

Greece. Joint registry working meeting between IA and IPR

July 2005 Technical Interchange Meeting between IA and MOIMS IPR

September 2005 Publish green book version of Information Architecture Reference document

November 2005 Registry White Paper based on requirements. Scenarios and best practices

November 2005 CCSDS XML Registry Prototype

May 2006 Initial XML Registry White Book

August 2006

Update to information models in IA Green Book

November 2006 Final XML Registry White Book

August 2007 Update to information models (data, software) in IA Green Book

November 2007 XML Registry Red Book

May 2008 XML Registry Blue Book

Open Issues

• While there exists more CCSDS participation, it is still minimal across the agencies.

• Similarities exist between “Reference Architecture for Space Information Management” and the OAIS, but differences are:

– OAIS is a reference model and process focusing on preservation and archive. Data model is specific to archiving.

– IA focusing on a cross-cutting information management reference architecture applicable across mission lifecycle

• Modeling notations and disagreement on how to best render an architecture still continues to be problematic

– Using UML class diagrams for components, interfaces and data models

• Individuals with solid experience architecting data-driven systems

• IA-related occurring in multiple places (Atlanta and Toulouse). Prevents adequate cross-group interactions.

Action Items

• Send meeting notes, presentations and comments to IAWG – To: Info Arch WG Members– Due: Due September 30, 2005

• Add participants to mailing list and send document to SEA Exec– To: SEA Exec– Due: Due September 2005

• Send an updated version of the green book by Oct 10, 2005– To: IAWG Members– Due: Due October 2005

• Send to the IA Greenbook to the CESG– To: CESG– Due: November 2005

Resource Problems

• There may not be enough resource commitments from member agencies to achieve deliverables. ESA and CNES considered important stakeholders.

Cross Area WG / BOF Issues

• Need on-going coordination with MOIMS Information Packaging and Registries (IPR).– Much more partnering is occurring with a focus on how to defin

e an information infrastructure (interfaces, specifications, architecture, components and best practices)

– Recommend that BoF be created for cross-cutting information infrastructure specification (registries, repositories) that gets participation from agency specialists as well as stakeholders

• IA becoming more important to other groups– SLE (data dictionaries, XML schemas, …)– XML standards and guidelines– SANA

Resolutions to be Sent to CESG and Then to CMC

• None

New Working Items, New BOFs, etc.

• Critical that a combined registries effort be initiated across groups