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BAS Metadata Standards
Part of BAS
  • BAS Metadata Standards
  • Standards
    • ISO 19115/19139
  • Profiles
    • MAGIC Discovery (v1)
  • Resources
    • Media Types
    • Licences
    • BAS Metadata Library
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  • Local Media Types
  • Local Media Types (services)
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  1. Resources

Media Types

Last updated 3 months ago

(also known as MIME types) indicate the format of a given file or resource artefact, such as application/pdf for a PDF, or image/png for a PNG image.

Media types for common formats are standardised via the registery.

Media types are shown:

  • in metadata record distribution options, describing the formats a resource can be downloaded as

  • in data access systems, when resource artefacts (files) are downloaded

Typically these media types will match. Metadata records may use a where additional context can be provided.

Local Media Types

A set of local media types are registered for use within BAS to provide additional context, or where no suitable IANA media type is available. Wherever possible, local types are based on a broader or cloest matching IANA registered type.

For example the local media type is based on the IANA type.

These local types are intended for use within metadata records included in the BAS Data Catalogue. They may be used by others for other purposes if useful, but may be changed or removed at any time.

Type
Name

Georeferenced PDF

Zipped GeoPackage

Zipped Shapefile

Local Media Types (services)

A set of additional are defined to represent services within distribution options.

This approach is known bad practice but cannot be fixed until services (and service bindings) can be used within the BAS metadata ecosystem.

Type
Name

Esri ArcGIS Feature Service

OGC API Features Service

Esri ArcGIS Vector Tile Service

Esri ArcGIS Hosted Feature Layer

Esri ArcGIS Hosted OGC Feature Layer

Esri ArcGIS Hosted Vector Tile Layer

Media types
IANA media types
local media type
application/pdf+geo
application/pdf
local media types
application/pdf+geo
application/geopackage+sqlite3+zip
application/vnd.shp+zip
x-service/arcgis+service+feature
x-service/ogc+api+feature
x-service/arcgis+service+tile+vector
x-service/arcgis+layer+feature
x-service/arcgis+layer+feature+ogc
x-service/arcgis+layer+tile+vector