Update on Geospatial Data Preservation Efforts Sponsored and hosted by Update on Geospatial Data Preservation Efforts 71st OGC Technical Committee Mountain View, CA. USA Steve Morris December 6, 2009 © 2009 Open Geospatial Consortium, Inc.

Status of Data Preservation Efforts Wide range of data preservation efforts since mid-2000’s National and state/provincial level initiatives Efforts and guidance are moving beyond “don’t delete the old data” Increased attention to temporal data management and utilization in software products and in standards e,g, “the word ‘temporal’ occurs zero times in ISO 19111:2005, but 16 times in ISO 19111:2007” [from GML CR 08-159] Recent Meetings Meeting of European practitioners in “Archiving Digital Cartography and Geoinformation” in Berlin Dec. 2008 Library of Congress GeoSummit meeting in Nov. 2009 to develop national strategy for geospatial data preservation and access © 2009 Open Geospatial Consortium, Inc.

NDIIPP States Initiatives Library of Congress National Digital Information Infrastructure and Preservation Program 2004-2009: North Carolina Geospatial Data Archiving Project (NCGDAP) Engage existing SDI (NC OneMap) in data preservation and access Catalyze discussion within the community 2008: Community-developed best (or “not bad”) practices 2007-2011: Geospatial Multistate Archiving and Preservation Partnership (GeoMAPP) Initially 3 states led by NC, expanding to 5-6 states in 2010 Formalized collaboration of state geo agencies and state archives Integrating archive processes into state SDIs (selection and appraisal, retention schedules, routinized transfer to archives) © 2009 Open Geospatial Consortium, Inc.

What’s Been Learned (Highlights) Mitigate both technical and organizational risk by replicating data elsewhere ala LOCKSS (Lots of Copies Keeps Stuff Safe) Model Make state/national archives part of SDI Data preservation should be like breathing Temporal/historical data must be part of current access infrastructure … but mitigate organizational risk by replicating to archives “Archival” formats are problematic Do archival formats or profiles like PDF/A guarantee obsolescence? It’s not just data but also projects, models, CRS’s, representations (e.g., GeoPDF), web services state © 2009 Open Geospatial Consortium, Inc.

Standards Considerations OGC Data Preservation DWG (Dec. 2006- ) Content packaging for transfer and exchange Complex (high barrier): MPEG 21 DIDL, METS, XFDU, IMS-CP Simple, often Zip-based (low barrier): MEF, KMZ, BagIt Data state in web services, DSS, Decision Fusion The “data custody” vs. “data connection” problem Temporal implications of WMTS? In the OGC context should we talk about “data preservation” or “data persistence”? Persistent resolution of names; maintenance of globally unique IDs Impacts of schema evolution Replication of services (not just of data) © 2009 Open Geospatial Consortium, Inc.

© 2009 Open Geospatial Consortium, Inc. Input Requested Future directions for Data Preservation DWG Ways to interact with other Working Groups Thank You! Contact: Steve Morris North Carolina State University Libraries Steven_Morris@ncsu.edu © 2009 Open Geospatial Consortium, Inc.

© 2009 Open Geospatial Consortium, Inc.