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GeoBlacklight 1.0 Metadata Schema

Brief

Label uri Required?
Identifier dc_identifier_s X
Rights dc_rights_s X
Title dc_title_s X
Provenance dct_provenance_s X
Schema Version geoblacklight_version X
Slug layer_slug_s X
Bounding Box solr_geom X
Creator dc_creator_sm
Description dc_description_s
Format dc_format_s
Language dc_language_sm
Publisher dc_publisher_sm
Source dc_source_sm
Subject dc_subject_sm
Type dc_type_s
Is Part Of dct_isPartOf_sm
Date Issued dct_issued_dt
References dct_references_s
Spatial Coverage dct_spatial_sm
Temporal Coverage dct_temporal_sm
Geometry Type layer_geom_type_s
Layer ID layer_id_s
Modified Date layer_modified_dt

Details

Identifier

Label Identifier
uri dc_identifier_s
Required yes
Type string
Description Unique identifier for layer as a URI. It should be globally unique across all institutions, assumed not to be end-user visible
Entry Guidelines This is usually of the form http://institution/id.
Controlled Vocabulary no
Element Set Dublin Core Metadata Element Set
Example "http://purl.stanford.edu/vr593vj7147"

Rights

Label Rights
uri dc_rights_s
Required yes
Type string
Description Controls access in the geoportal and is indicated by a padlock icon. Users need to sign in to download restricted items
Entry Guidelines Choose either Public or Restricted
Controlled Vocabulary "Public" or "Restricted"
Element Set Dublin Core Metadata Element Set
Example "Public"

Title

Label Title
uri dc_title_s
Required yes
Type string
Description The name of the resource
Entry Guidelines Titles should include place names and dates when available.
Controlled Vocabulary no
Element Set Dublin Core Metadata Element Set
Example "Roads: Minneapolis, Minnesota, 2010"

Provenance

Label Provenance
uri dct_provenance_s
Required yes
Type string
Description The name of the institution that holds the resource or acts as the custodian for the metadata record.
Entry Guidelines Each institution should contribute an icon the the GeoBlacklight Icons project. The value for this field should be one of the agreed upon shortened names for each institution (see Provenance list). This will embed the correct icon into the search results and item pages.
Controlled Vocabulary This repository contains the insitutions that have shared icons: https://github.com/geoblacklight/geoblacklight-icons
Element Set DCMI Metadata Terms
Example "Stanford"

Schema Version

Label Schema Version
uri geoblacklight_version
Required yes
Type string
Description Indicates which version of the GeoBlacklight schema is in use.
Entry Guidelines Only current value is "1.0"
Controlled Vocabulary no
Element Set GeoBlacklight
Example "1.0"

Slug

Label Slug
uri layer_slug_s
Required yes
Type string
Description This is a string appended to the base URL of a GeoBlacklight installation to create a unique landing page for each resource. It is visible to the user and is used for Permalinks.
Entry Guidelines This string must be a globally unique value. The value should be alpha-numeric characters separated by dashes, and is typically of the form institution-keyword1-keyword2.
Controlled Vocabulary no
Element Set GeoBlacklight
Example "stanford-andhra-pradesh-village-boundaries"

Bounding Box

Label Bounding Box
uri solr_geom
Required yes
Type string
Description The rectangular extents of the resource. Note that this field is indexed as a Solr spatial (RPT) field.
Entry Guidelines Bounding box of the layer as a ENVELOPE WKT (from the CQL standard) using coordinates in (West, East, North, South) order. The pattern is: ENVELOPE(.,.,.,.)
Controlled Vocabulary no
Element Set GeoBlacklight
Example "ENVELOPE(76.76, 84.76, 19.91, 12.62)"

Creator

Label Creator
uri dc_creator_sm
Required no
Type array
Description The person(s) or organization that created the resource
Entry Guidelines This may be an individual or an organization. If available, it should match with the Library of Congress Name Authority File.
Controlled Vocabulary If available, it should match with the Library of Congress Name Authority File.
Element Set Dublin Core Metadata Element Set
Example "George Washington", "Thomas Jefferson"

Description

Label Description
uri dc_description_s
Required no
Type string
Description At minimum, this is a reiteration of the title in sentence format. Other relevant information, such as data creation methods, data sources, and special licenses, may also be included.
Entry Guidelines If the description is minimal or lacking, it can be improved by concatenating available metadata fields, such as title, date, format, and place.
Controlled Vocabulary no
Element Set Dublin Core Metadata Element Set
Example "My Description"

Format

Label Format
uri dc_format_s
Required no
Type string
Description This indicates the file format of the data. If a download link is included, this value shows up on the item page display in the download widget.
Entry Guidelines Choose from set values (see Format list)
Controlled Vocabulary Format Controlled Vocabulary
Element Set Dublin Core Metadata Element Set
Example "Shapefile"

Language

Label Language
uri dc_language_sm
Required no
Type array
Description Indicates the language of the data or map
Entry Guidelines Current practice is to spell out language (in English) instead of using a code. Ex “French” instead of “fra”
Controlled Vocabulary no
Element Set Dublin Core Metadata Element Set
Example "English"

Publisher

Label Publisher
uri dc_publisher_sm
Required no
Type array
Description The organization that made the original resource available
Entry Guidelines This should always be an organization.
Controlled Vocabulary If available, it should match with the Library of Congress Name Authority File.
Element Set Dublin Core Metadata Element Set
Example "ML InfoMap"

Source

Label Source
uri dc_source_sm
Required no
Type array
Description This is used for parent/child relationships and activates the Data Relations widget in GeoBlacklight.
Entry Guidelines This is only added to the child records. Enter the layer_slug_s of the parent record(s) into this field. See https://github.com/geoblacklight/geoblacklight/wiki/Using-data-relations-widget for more information.
Controlled Vocabulary no
Element Set Dublin Core Metadata Element Set
Example "stanford-vr593vj7147"

Subject

Label Subject
uri dc_subject_sm
Required no
Type array
Description These are theme or topic keywords
Entry Guidelines These should be consistent and chosen from a controlled vocabulary. Place name subject headings should be transferred to Spatial Coverage. Use sentence style capitalization, where only the first word of a phrase is capitalized
Controlled Vocabulary Recommended thesauri are ISO Topic Categories and Library of Congress Subject Headings. Library of Congress place name subject headings should be transferred to Spatial Coverage.
Element Set Dublin Core Metadata Element Set
Example "Census", "Human settlements"

Type

Label Type
uri dc_type_s
Required no
Type string
Description This is a general element to indicate the larger genre of the resource.
Entry Guidelines Choose from Dublin Core Type values
Controlled Vocabulary Type Controlled Vocabulary
Element Set Dublin Core Metadata Element Set
Example "Dataset"

Is Part Of

Label Is Part Of
uri dct_isPartOf_sm
Required no
Type array
Description Holding entity for the layer, such as the title of a collection
Entry Guidelines Plain text that is indexed in the Collections facet
Controlled Vocabulary no
Element Set DCMI Metadata Terms
Example "Village Maps of India"

Date Issued

Label Date Issued
uri dct_issued_dt
Required no
Type date-time
Description This is the publication date for the resource
Entry Guidelines Use the XML Schema dateTime format (YYYY-MM-DDThh:mm:ssZ)
Controlled Vocabulary no
Element Set DCMI Metadata Terms
Example "2015-01-01T12:00:00Z"

References

Label References
uri dct_references_s
Required no
Type string
Description This element is a hash of key/value pairs for different types of external links. It external services and references using the CatInterOp approach.
Entry Guidelines See External Services
Controlled Vocabulary References URIs
Element Set DCMI Metadata Terms
Example "dct_references_s": "{"http://schema.org/url\":\"http://purl.stanford.edu/bm662dm5913\",\"http://schema.org/downloadUrl\":\"http://stacks.stanford.edu/file/druid:bm662dm5913/data.zip\"}"

Spatial Coverage

Label Spatial Coverage
uri dct_spatial_sm
Required no
Type array
Description This field is for place name keywords
Entry Guidelines If records are shared across institutions, the place name text strings should be specified out to the nation level.
Controlled Vocabulary Recommended thesaurus is GeoNames
Element Set DCMI Metadata Terms
Example "Philadelphia, Pennsylvania, United States"

Temporal Coverage

Label Temporal Coverage
uri dct_temporal_sm
Required no
Type array
Description This represents the "Ground Condition" of the resource, meaning the time period data was collected or is intended to represent. Displays on the item page in the Year value.
Entry Guidelines This is a text string and can indicate uncertainty
Controlled Vocabulary no
Element Set DCMI Metadata Terms
Example "2007-2009"

Geometry Type

Label Geometry Type
uri layer_geom_type_s
Required no
Type string
Description This shows up as Data type in GeoBlacklight and each value has an associated icon. It differentiates between vector types (point, line, polygon, etc.) and raster types (raster data, image, paper map)
Entry Guidelines Choose from set values (see Controlled Vocabulary Lists)
Controlled Vocabulary Geometry Type Controlled Vocabulary
Element Set GeoBlacklight
Example "Polygon"

Layer ID

Label Layer ID
uri layer_id_s
Required no
Type string
Description This indicates the layer id for any WMS or WFS web services listed in the dct_references_s field
Entry Guidelines Only the layer name is added here. The base service endpoint URLs (e.g. "https://maps-public.geo.nyu.edu/geoserver/sdr/wms") are added to References
Controlled Vocabulary no
Element Set GeoBlacklight
Example "druid:vr593vj7147"

Modified Date

Label Modified Date
uri layer_modified_dt
Required no
Type date-time
Description Last modification date for the metadata record
Entry Guidelines Use the XML Schema dateTime format (YYYY-MM-DDThh:mm:ssZ)
Controlled Vocabulary no
Element Set GeoBlacklight
Example "2015-01-01T12:00:00Z"