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- 2. 3.1. Benefits of metadata 1. Data, plus the context for its use (documentation, metadata) become information.
- 3. 4) Collection of metadata builds upon and enhances the data management procedures of the spatial community;
- 4. 3.2. Context and rationale of metadata for SDI 1. The word metadata shares the same Greek
- 5. Note. World Wide Web (WWW) – the global, seamless environment in which all information (text, images,
- 6. Notes. 1. Metadata allows a producer to describe a dataset fully so that users can understand
- 7. 3.3. Levels of metadata 1. There are different levels of metadata, such as: 1) Discovery metadata;
- 8. 2. Discovery metadata: 1) Is the minimum amount of information that needs to be provided to
- 9. 3. Exploration metadata: – Provides sufficient information enable an inquirer: a) To ascertain that data fit
- 10. 4. Exploitation metadata: 1) Include those properties required to access, transfer, load, interpret, and apply the
- 11. 3.4. Linkages between spatial data and metadata 1. New versions of commercial GIS software are now
- 12. 3. Metadata: 1) May exist at: a) The collection level (e.g. satellite series); b) A data
- 13. 3.5. Metadata standards 3.5.1. Purpose for use metadata standards 1. Metadata structures and definitions should be
- 14. 3.5.2. Main spatial metadata standards Three main metadata standards exist or are in development that are
- 15. 1. The Content Standard for Digital Geospatial Metadata, U.S. 1994, revised 1998 (http://www.fgdc.gov): 1) Approved in
- 16. 2. A CEN Pre-standard adopted in 1998 (http://forum.afnor.fr/afnor/WORK/AFNOR/GPN2/Z13C/ indexen.htm): 1) In 1992 the Comité Européen de
- 17. Notes. 1. In 1994 the International Standards Organization created technical committee 211 (ISO/TC 211) with responsibility
- 18. 3. ISO 19115 (International Standard) including ISO 19139 (Draft Technical Specification): 1) Was published and approved
- 19. 6) ISO 19115 has a companion specification, ISO 19139, which: a) Standardizes the expression of 19115
- 20. 3.5.3. Other initiatives concerning spatial metadata standards 1. A number of national and regional initiatives have
- 21. 3. Metadata also forms an important part of the OpenGIS Abstract Specification: 1) The OpenGIS Consortium
- 22. 3.5.4. General metadata standards 1. Other standards exist in the broader topic of metadata that do
- 23. 1) The Dublin Core, which: a) Is a metadata element set intended to facilitate discovery of
- 24. 2) The Spatial Data Transfer Standard (SDTS) and the Vector Product Format (VPF) Digital Exchange Standards
- 25. 3.6. Metadata for applications 1. There is a tendency to adapt the metadata structure and content
- 26. 4. The World Wide Web Consortium and Oasis XML groups have specified service and resource discovery
- 27. 3.7. Incentives for metadata development 1. The impressive list of incentives includes financial resources, knowledge and
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