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Charters : 2.01 Data Archive Interoperability Working Group

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Name of Group

Short Name

Area

Chairperson

Chairperson E-Mail Address

Chairperson Agency

Deputy Chairperson

Deputy Chairperson E-Mail Address

Deputy Chairperson Agency

Mailing List

Scope of Activity

Rationale for Activity

Goals

Survey of Similar Standards Efforts Undertaken in Other Bodies and elsewhere in CCSDS

Patent Licensing Applicability for Future Standards

Technical Risk Mitigation Strategy

Management Risk Mitigation Strategy

Description of Change

Brian Oliver (5/24/2018 2:27 PM): Some editorial updates to the Updates to eliminate completed items and to add forward looking goals as proposed to and agreed by CESG and CMC.

David Giaretta (11/9/2017 9:27 AM): The charter has been updated to make it clear that we are extending our work on digital preservation to cover interoperability between repositories. (1) change the name (while maintaining the acronym) by replacing Ingest by Interoperability (2) removed completed goals and added new ones in lines with presentation at last CMC.

CCSDS Tech Support (8/19/2015 10:10 PM): This charter was changed to include additional fields included in the charter template since our previous update. Completed items have been removed. Charter is updated to allow it to remain relevant without change as new projects for this WG are defined and approved by CESG.

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Name of Group

2.01 Data Archive Interoperability Working Group

Area

Mission Operations and Information Management Services Area (MOIMS)

Chairperson

David Giaretta 

Chairperson E-Mail Address

david@giaretta.org

Chairperson Agency

UKSA

Deputy Chairperson

John Garrett

Deputy Chairperson E-Mail Address

garrett@his.com

Deputy Chairperson Agency

USA (formerly NASA)

Mailing List

moims-dai@mailman.ccsds.org

Scope of Activity

The DAI WG will address all areas of Archive data formats, functions, services, operations, and interoperability for long-term preservation and exploitation for current and future user communities. Audit and certification issues are also within the scope for this group. The scope includes data and information preservation, discoverability, accessibility, interoperability and adding value for long term usage. and exploitation

Rationale for Activity

Agencies have a critical need to make data available for use by current missions and preserved for use and re-use by future missions and future generations, the science and engineering data that is the hard-won benefits from their space missions. Further, they need to establish interoperable mechanisms to reduce the cost and increase the automation and capabilities for interorganizational cooperation associated with acquiring, ingesting, managing, and disseminating data and metadata to, within, and from archives. Digital obsolescence is a major threat to cope with for preservation while disruptive technology has broadened the value and insights of the data for much wider communities then originally foreseen at the time of data generation. The needs of Producers, Archives, and Consumers can be met by developing additional standards addressing gaps in our current suite of standards. All archives that protect the assets of our space agencies, including both mission archives, final archives and repositories performing long-term preservation, need appropriate processes and mechanisms to be agreed among the agencies to insure long-term digital preservation in a way that supports: findability, accessibility, interoperability and reusability between agencies and other organizations (such as their partners, contractors, and users.) This working group will supply standards for those interoperability mechanisms. The DAI WG will also endeavor, as in the past, to involve additional organizations in ISO and outside the space agency community, so that (as with OAIS), the CCSDS standards will be so broadly acceptable worldwide that they will be supported long term and commercially, hence truly assuring long-term preservation of the agencies’ data and information assets.

Goals

Goal 1: Establish an extensible, interoperable, architectural framework for long-term digital preservation for archives. Then proceed to develop standards required to support that architecture. The standards produced will ultimately address: - A layered architecture - Provider, consumer and management user interfaces - Abstraction layer functions that provide platform independence for those user interfaces. - Adaptations or bindings (plug-ins, drivers, APIs) for various archive types, both within the space agencies and across the worldwide community of archives. - Secure participation from external organizations to supplement the resources from the space agencies, and to completely perform any standards development that is of negligible interest to the space agencies. - Approaches for legacy archive interface compatibility Goal 2: Provide best practices for users regarding information/data asset management throughout the mission or project phases from planning through re-use in order to promote long-term preservation. Goal 3: As other needs are identified within the scope of this group, we will develop new standards to address those needs. New projects will be undertaken when defined through the CCSDS project framework and following approval by the CESG. Goal 4: While this working group exists, support other CCSDS Working Groups with their Archive related issues Goal 5: While this working group exists, support CCSDS requirements in regard to Archives: – monitor and report on Agency archival issues and implementations; – perform the required 5-year CCSDS and ISO reviews on existing archive related standards. Update and extend these standards as needs are identified during the reviews. – and follow it through CCSDS and ISO approvals.

Survey of Similar Standards Efforts Undertaken in
Other Bodies and elsewhere in CCSDS

The area of archiving standardization is active. Due to the successful adoption of past CCSDS archival standards, this working group is looked to as a leader in the archival standardization field, and the past work in OAIS has been widely adopted in those other bodies. Additionally, the DAI WG has provided an extensive response to CCSDS management concerning surveys of other bodies working in this area. In summary, that list of other bodies is: CCSDS SM&C, the OGC, ISO TC211/WG7, the IIPC, the OMG, the RDA, ISO TC46, the LTDP, PIN, the GEO, LOTAR, IVOA, and METS. We have confirmed that there are no conflicts or overlaps with those bodies. Working group members continue to network with their colleagues outside the CCSDS attempting to ensure that duplication of efforts is minimized.

Patent Licensing Applicability for Future Standards

No patent licensing issues are currently envisioned. As new projects are defined, any patent licensing issues will be identified within the individual projects.  

Technical Risk Mitigation Strategy

Technical risks are low since there is already broad activity in this area and many years of experience of ad hoc non-standardized activities meeting the needs of individual archives. The initial scoping is the Space agency archives and their Producers. It may also be expanded if reviewers outside the proposed scope find it relevant and useful. Attempts will be made to include participation by interested parties from outside the traditional CCSDS members. If outside participation is not obtained, these activities may result in standards that are less well accepted outside the CCSDS community. Lack of outside participation introduces more possibilities for outside standards that may overtake or conflict with CCSDS activities. Working group members continue to network with their colleagues outside the CCSDS to mitigate as much of the risk as possible.

Management Risk Mitigation Strategy

Unavailability of resources could delay achievement of milestones. There is the potential that one or more active experts from various agencies may become unavailable and this could impact the schedule if the timeline slips substantially. A fallback option would be to reschedule the milestones in accordance with actual availability of personnel and other resources. There are no missions within agencies that have an interdependency or critical path need date for these products, so they will be produced at a pace commensurate with the resources. This allows the opportunity to prioritize quality of product over speed of production. This is appropriate considering the long-term view of long-term digital preservation.
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Note - To view "Draft" projects, which are not yet approved Click Here.

 Approved Projects

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Currently 8 Projects     
Document Type
Project Status
Project Phase
Modified By
Audit and Certification of Trustworthy Digital Repositories. (ISO 16363) - 5 year reviewMagentaOn ScheduleFirst draft circulated to WGJohn Garrett 
Producer-Archive Interface Specification (PAIS)BlueAll Tasks CompletedProject CompletedCCSDS Tech Support 
Producer Archive Interface Specification TutorialGreenAll Tasks CompletedProject CompletedGiaretta David 
Reference Model for an Open Archival Information System (OAIS), Issue 2MagentaAll Tasks CompletedProject CompletedCCSDS Tech Support 
Data Entity Dictionary Specificaton Language (DEDSL) - XML SchemaOrangeAll Tasks CompletedProject CompletedBrian Oliver 
Reference Model for an Open Archival Information System (OAIS) - 5 year reviewMagentaOn ScheduleSecond draft circulated to WGJohn Garrett 
Open Archive Information Systems Interoperability Framework (OAIS-IF) Architecture DescriptionMagentaOn ScheduleSecond draft comments dueTom Gannett 
Information Preparation to enable Long Term useMagentaOn ScheduleSecretariat Document ProcessingJohn Garrett