Metadata Standards !!

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Metadata Standards !!

• Roger Longhorn
• City University, London
• Info-Dynamics Research Associates Ltd
• ral_at_alum.mit.edu

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Standards !
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(Metadata) Standards are great.

• because there are so many of them!
• Global (ISO)
• European (CEN)
• National (e.g. BSi, AFNOR, DIN, ANSI, )
• Industry (e.g. W3C, OGC)
• Thematic/Sectoral (global, regional, national)
• de jure v. de facto v. PAS

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Status of a Standard

• de facto - often widely available and used (.gif)
  or quite specific to a unique data/file type
  (Microsoft Word .doc)
• PAS - Publicly Available Specifications (OGC,
  W3C, CEN CWAs)
• de jure agreed by an official (legally
  mandated) standards organisation (national,
  regional, international)

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Status of a Standard

• status can alter over time
• not uncommon for a PAS or de facto standard to
  eventually become a de jure standard (e.g. Dublin
  Core?ISO, CEN ISSS CWAs ? CEN EN, or ISO
  Recommendation ? ISO Standard)
• does the change in status affect you?

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Availability, Usability, IPR

• proprietary - even some de jure standards may
  have proprietary elements in them
• constant surveillance by organisations like OGC
  and W3C to protect their final specifications
  from IPR restrictions by any one participant or
  at least make such interests as open
  transparent as possible

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Availability, Usability, IPR

• public domain - the legal definition of public
  domain is that the IPR is open, freely available
  to anyone to do with as they wish (including
  reselling)
• IP enters the public domain either by law or by
  publicly surrendering IPR

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Geospatial Metadata Standards - USA
Content Standard for Digital Geospatial Metadata (CSDGM) Federal Geographic Data Committee (FGDC) standard for the USA NSDI FGDC-STD-001-1998 http//www.fgdc.gov/metadata/contstan.html
CSDGM Biological Data Profile FGDC-STD-001.1-1999  for the National Biological Information Infrastructure http//www.fgdc.gov/standards/status/sub5_2.html http//www.nbii.gov/datainfo/metadata
CSDGM Shoreline Metadata Profile FGDC-STD-001.2-2001 http//www.fgdc.gov/standards/status/sub5_6.html
CSDGM Extensions for Remote Sensing Data http//www.fgdc.gov/standards/status/csdgm_rs_ex.html
CSDGM Geospatially Referenced Cultural and Demographic Data http//www.fgdc.gov/standards/status/sub2_5.html
Z39.50 GEO Profile http//www.geoconnections.org/architecture/technical/specifications/geodata_registry/geo22.htm
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ISO GI Metadata Standards
ISO/IEC 11179 - Specification and standardization of data elements http//www.iso.org Search on 11179 and Standards (30.00)
ISO 19115 - Geographic information Metadata http//www.iso.org or http//www.isotc211.org/ Search on 19115 and Standards (135.00)
ISO 19139 - dataset implementation model and schemas http//www.iso.org or http//www.isotc211.org/
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CEN TC 287

• CEN-TC287 for geographic data http//www.cenorm.be
  
• CEN ISSS CWA 14857 - Dublin Core to ISO 19115
• ftp//ftp.cenorm.be/PUBLIC/CWAs/e-Europe/MMI-DC/cw
  a14857-00-2003-Nov.pdf
• CEN ISSS CWA 14856 - Guidance on mapping DC-ISO
• ftp//ftp.cenorm.be/PUBLIC/CWAs/e-Europe/MMI-DC/cw
  a14856-00-2003-Nov.pdf
• CEN ISSS CWA 15858 - DC Spatial Application
  Profile
• ftp//ftp.cenorm.be/PUBLIC/CWAs/e-Europe/MMI-DC/c
  wa14858-00-2003-Nov.pdf

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CEN TC 287 EN (ISO) Standards

• Standard reference Title
• EN ISO 191012005 Geographic information -
  Reference model
• (ISO 191012002)
• EN ISO 191052005 Geographic information -
  Conformance and testing
• (ISO 191052000)
• EN ISO 191072005 Geographic information -
  Spatial schema
• (ISO 191072003)
• EN ISO 191082005 Geographic information -
  Temporal schema
• (ISO 191082002)
• EN ISO 191112005 Geographic information -
  Spatial referencing by
• coordinates (ISO 191112003)
• EN ISO 191122005 Geographic information -
  Spatial referencing by
• geographic identifiers (ISO 191122003)
• EN ISO 191132005 Geographic information -
  Quality principles
• (ISO 191132002)
• EN ISO 191142005 Geographic information -
  Quality evaluation
• procedures (ISO 191142003)
• EN ISO 191152005 Geographic information
  Metadata
• (ISO 191152003)

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CEN TC 287 Work Items

• prEN ISO 19106 Geographic information Profiles
• (ISO 191062004)2006-03
• prEN ISO 19116 Geographic information -
  Positioning services
• (ISO 191162004) 2006-03
• prEN ISO 19125-1 Geographic information - Simple
  feature
• access - Part 1 Common architecture
• (ISO 19125-12004) 2006-03
• prEN ISO 19125-2 Geographic information - Simple
  feature
• access - Part 2 SQL option
• (ISO 19125-22004) 2006-03
• prEN ISO 19111 rev Geographic information -
  Spatial referencing by
• coordinates 2007-12
• Standards, specifications, technical reports and
  guidelines, required to implement Spatial Data
  Infrastructure - by 2006-07

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Dublin Core Discovery Metadata

• Dublin Core (at 2005-06-15) http//dublincore.org/
  documents/dcmi-terms/
• Dublin Core - Abstract model http//dublincore.org
  /documents/abstract-model/
• ANSI-NISO Z39.85-2001 http//www.niso.org/standard
  s/resources/Z39-85.pdf
• ISO 158362003 http//www.iso.org/iso/en/ISOOnline
  .frontpage
• Search on 15836 and Standards (30.00)
• CEN CWA 148572003 DC-to-ISO 19115 Crosswalk

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Australia/New Zealand

• ANZLIC (Australia New Zealand Land Information
  Council) - Core Metadata Elements for Land and
  Geographic Directories
• http//www.anzlic.org.au/infrastructure_metadata.h
  tml
• ANZLIC Metadata Guide http//www.anzlic.org.au/dow
  nload.html?oid2358011755

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Canada

• Canadian (CGDI) Metadata Standards
• http//www.geoconnections.org/CGDI.cfm/fuseaction/
  technical.indextospecs/gcs.cfm
• uses FGDC CSGDM now converting to ISO 19115
  http//www.geoconnections.org/CGDI.cfm/fuseaction/
  technical.metadata_for_geodata/gcs.cfm

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UK GI Metadata Standards

• UK GEMINI Standard version 1.0 (2004-10-12)
• ISO 19115 compatible (profiled)
• eGMS compatible (Dublin Core based)
• superseded older NDGF standard (FGDC based)
• http//www.gigateway.org.uk/metadata/pdf/UK_GEMINI
  _v1.pdf
• eGMS eGovernment Metadata System standard (Dublin
  Core/ISO 15836-based)
• http//www.govtalk.gov.uk/schemasstandards/metadat
  a_document.asp?docnum872

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Legacy Standards Cross-walks

• Directory Interchange Format (NASA DIF) - source
  of various derived standards and used extensively
  by the EO community (the DIF Guide)
  http//gcmd.nasa.gov/User/difguide/difman.html
• DIF to ISO 19115 mapping http//gcmd.nasa.gov/Abou
  tus/standards/difiso.html
• ANZLIC (FGDC) to DIF mapping http//gcmd.nasa.gov/
  Aboutus/standards/anzlic_to_dif.html
• FGDC to DIF mapping http//gcmd.nasa.gov/Aboutus/s
  tandards/fgdc_to_dif.html
• Dublin Core to DIF mapping http//gcmd.nasa.gov/Ab
  outus/standards/dublin_to_dif.html

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Dublin Core Metadata Elements
Title A name given to the resource.
Creator An entity primarily responsible for making the content of the resource.
Subject and Keywords A topic of the content of the resource.
Description An account of the content of the resource.
Publisher An entity responsible for making the resource available
Contributor An entity responsible for making contributions to the content of the resource.
Date A date of an event in the lifecycle of the resource.
Resource Type The nature or genre of the content of the resource.
Format The physical or digital manifestation of the resource.
Resource Identifier An unambiguous reference to the resource within a given context.
Source A Reference to a resource from which the present resource is derived.
Language A language of the intellectual content of the resource.
Relation A reference to a related resource.
Coverage The extent or scope of the content of the resource.
Rights Management Information about rights held in and over the resource.
Audience Target audience for this resource
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CEN CWA 14857 DC-ISO 19115 Crosswalk Summary of
the DC-ISO Core mapping gaps DC element
ISO-CORE element 6 CONTRIBUTOR N/A 13
RELATION N/A 15 RIGHTS N/A 16 AUDIENCE N/A
N/A Dataset character set (C) (MD_Metadata.iden
tificationInfo gt MD_DataIdentification.characterSe
t) N/A Spatial resolution of the dataset
(O) (MD_Metadata.identificationInfo gt
MD_DataIdentification.spatialResolution
gt MD_Resolution.equivalentScale or
MD_Resolution.distance) N/A Reference
system (O) (MD_Metadata.referenceSystemInfo gt
MD_ReferenceSystem) N/A Metadata file
identifier (O) (MD_Metadata.fileIdentifier)
N/A Metadata standard name (O) (MD_Metadata.me
tadataStandardName) N/A Metadata standard
version (O) (MD_Metadata.metadataStandardVersion
) N/A Metadata language (C) (MD_Metadata.l
anguage) N/A Metadata character set
(C) (MD_Metadata.characterSet)
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• There are four elements from Dublin Core that
  have no correspondence with any element of the
  Core version of the ISO DIS 19115. These four
  elements are CONTRIBUTOR, RELATION, RIGHTS
  and AUDIENCE. Nevertheless, all four of these
  do have a correspondence with one or more
  elements of the full ISO standard.
• This Core restriction could justify the expansion
  of the ISO Core Metadata for Geographic Data Sets
  in order to fulfil the mapping to Dublin Core.
  The aim of Dublin Core is to compile the minimum
  elements that describe a resource and thus ISO
  Core should include at least these DC elements to
  be really Core.

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Mapdex Mapservice Summary - last updated on
2005-07-04 1045from http//www.mapdex.org/geo_su
mmary.cfm
MAP SERVICETYPE NUMBER OFMAP SERVICES MAP SERVICE TYPEBY PERCENT
ExtractServer 54 0.2
FeatureServer 1126 3.9
Feature_IO 2 0
ImageServer 27376 95.2
LioQuery 1 0
MetadataServer 150 0.5
RouteServer 23 0.1
RouteSrv 12 0
SDEGeocodeServer 1 0
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• What to do if
• you
• have just been appointed the metadata
  specialist in your organisation?

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