ISO-19115 - North American Profile CTI - Implementation - PowerPoint PPT Presentation

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ISO-19115 - North American Profile CTI - Implementation

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  1. ISO-19115 - North American ProfileCTI - Implementation Sylvain Vallières Centre for Topographic Information - Sherbrooke 24/01/2008

  2. Presentation Outline • Metadata management in the old days ! • Multiple approaches depending of the context • North American Profile (NAP) & Data Producers • Metadata Utility & Usage • Physical implementation of the NAP at CTI • Physical model, Database, Transactions, Tools, etc. • New approach for the metadata management • Conclusion Canada’s Natural Resources – Now and for the Future

  3. Metadata managementin the old days ! (1 of 2) Producer Side • Organizations needs to keep a minimum set of information about their products. (Example: precision, validity date, projection, sources used, etc.) • They also needs an easy access to this information for the planning of the different works or treatment to be done. (Example: planimetric correction, update, integration, edge match etc.) • Need for a management system for the metadata • For the producer, metadata was a very important piece of their planning and production task • Metadata are kept in a “in house” format Canada’s Natural Resources – Now and for the Future

  4. Metadata managementin the old days ! (2 of 2) Client Side • For the user, metadata was an accessory file ! • How this information (metadata) is structured or formatted ? • In house format • Dublin Core • FGDC • Etc. • The group that made the largest usage of the metadata was the producer that created them ! Canada’s Natural Resources – Now and for the Future

  5. North American Profile (NAP)& Data Producers (1 of 2) New Context ! • For the producer: many new products are available and there is a need to standardized the way the metadata are kept and managed internally • For the client: The metadata are no longer just an accessory file but turn to be the major way to discover data and get access to it Canada’s Natural Resources – Now and for the Future

  6. North American Profile (NAP)& Data Producers (2 of 2) ISO-19115 North American Profile ! • For the producer: one standardized way to record metadata, independently of the product type. A common set of tools and standards available to manipulate the metadata (example: OGC-CSW) • For the client: A unique format describing their data and also a convergent way to discover data across WEB Portals Canada’s Natural Resources – Now and for the Future

  7. Physical implementationof the NAP at CTI (1 of 2) • Things to do to realize a physical implementation of the NAP • Transpose the conceptual model of the ISO-19115 in a physical model • Implement the physical model in a database • Validate that all the components cardinality are respected according to the standard • Test with real metadata (example: NTDB) • Create tools that load and extract metadata (WEB Services) Canada’s Natural Resources – Now and for the Future

  8. Tools • Conversion: • Style sheets (XSLT) • Java programs from Legacy “SIB” system to NAP XML files • Presentation: • Styles sheets (XSLT) – ESRI, GEONETWORK, etc. • Many visualization and edition tools – Example: ISO Metadata Editor (IME) • Information Management System – ESRI, GEONETWORK • Etc. Canada’s Natural Resources – Now and for the Future

  9. Conclusion • Gains !! • Simplification and standardization of metadata approach • Simplification to introduce a new product (one way to do things) • Same format for management and distribution of metadata Canada’s Natural Resources – Now and for the Future

  10. Questions ? Canada’s Natural Resources – Now and for the Future

  11. NAP Physical ModelClose-up (1 of 2) Canada’s Natural Resources – Now and for the Future

  12. NAP Physical Model (2 of 2) Canada’s Natural Resources – Now and for the Future

  13. Project Definition Needs : • Standard way to produce metadata • Centralized storage for metadata and point of access • Possibility to update metadata easily • Manage metadata of raw materials • Manage version of metadata • Keep historical metadata • Manage different language in metadata • Direct access to the metadata • Simple and standard way to access the metadata • Possibility to search and query the database • Etc… Canada’s Natural Resources – Now and for the Future

  14. MIS-NAP PostgreSQL PostGIS SPRING XML Metadata Files Hibernate Jibx MIS-NAP System WEB Services CSW ? Private CTI Private CTI Relational Database Private GSC Private ETC Private Canada’s Natural Resources – Now and for the Future

  15. Time Frame Excerpt from: Treasury Board Information Management Standard - TBITS-40 Canada’s Natural Resources – Now and for the Future