Unless suppliers and users of geographic data have a shared understanding of the kinds of real world phenomena represented by the data, users will be unable to judge whether the data supplied are fit for their purpose.

Feature cataloguing, examples Harald Stavestrand, Kom Phenthi Heng Xat ISO TC211 Standardisation Workshop, Vientiane Lao PDR, September 2008

Geospatial-related standards may be categorized as: Content standards, Access standards ore Exchange standards

Content standards: Including land use codes surveyor codes data dictionaries for cadastre geographical place names bathymetry etc

Access standards: Including: ISO series (Geographic information), ISO (Information Retrieval―Z39.50), Most of the OpenGIS standards

Exchange standards: Including: Geography Markup Language (GML) ScalableVector Graphics (SVG) Uniform Resource Identifiers (URIs aka URLs) perhaps also: ESRI shapefile Autodesk *.dxf

Metadata Data product specification Feature cataloguing Spatial referencing by coordinates QualityServices

Methodology for feature cataloguing ISO_DIS_19110[1].pdf ANZLIC Metadata Guidelines v2.pdf standardised_national_feature_codes[1].pdf icsm_hdm_feature_catalogue_v2004.mdb “Mekong River Base GIS data” and “5_cities map data“

I like to think of a feature catalogue for GIS database as the legend of a ordinary map.

The Features in the ”Mekong River Base GIS-data”

The Feature Attribute Names in the ”Mekong River Base GIS-data”

The Feature Attribute Values in the ”Mekong River Base GIS-data”

icsm_hdm_feature_catalogue_v2004.mdb

A feature_catalogue database consist of tables

The heart of a database is tables linked together This one should be according to ISO_DIS_19110.pdf

The 5 cities from Finmap

The Features in “the 5 city maps” from Finmap

The Feature Attribute Names

The Feature Attribute Values

The Features in Vientiane map of “The 5 cities” “Area_polygon”

The Features in Vientiane map of “The 5 cities” Area_polygon Road VName Other

Feature names some times called layer, coverage, themes etc Feature attributes some times called fields, attributes Feature attribute values some times called object types, types, objects, features, codes, values etc Instances some times called feature instances, objects, population, record

Kåp jai ! Thank You ! Harald Stavestrand p.t. Lao PDR