Data Model for Land Portal (exposed as LOD)
Introduction
The Land Library Data Model follows widely adopted standards for bibliographic resources or more broadly "document-like information objects" (DLIOs).
The model is designed on top of the following existing vocabularies:
- Dublin Core for properties common to most resources
- The Bibliographic Ontology for more specialized properties for bibliographic resources
- The FOAF vocabulary for properties of entities like persons and organizations
- The Schema.org vocabulary for properties of all relevant entities (creative works, persons, organizations, events, places)
- The SKOS vocabulary for all related concepts
The model also uses a few additional properties from subsidiary or broader vocabularies: Prov-O for indicating provenance and the Europeana Data Model for compatibility with Europeana.
The result is in line with the recommendations of the AIMS LODE-BD (Recommendations for LOD-enabled Bibliographic Description).
Table 1. Namespaces used in the Land Library RDF data model
The result is in line with the recommendations of the AIMS LODE-BD (Recommendations for LOD-enabled Bibliographic Description).
Table 1. Namespaces used in the Land Library RDF data model
| Prefix | Namespace |
|---|---|
| bibo | http://purl.org/ontology/bibo/ |
| dc | http://purl.org/dc/elements/1.1/ |
| dct | http://purl.org/dc/terms/ |
| edm | http://www.europeana.eu/schemas/edm/ |
| foaf | http://xmlns.com/foaf/0.1/ |
| geonames | http://www.geonames.org/ontology# |
| odrl | http://www.w3.org/ns/odrl/2/ |
| org | http://www.w3.org/ns/org# |
| owl | http://www.w3.org/2002/07/owl# |
| prov | http://www.w3.org/ns/prov# |
| rdf | http://www.w3.org/1999/02/22-rdf-syntax-ns# |
| rdfs | http://www.w3.org/2000/01/rdf-schema# |
| schema | http://schema.org/ |
| skos | http://www.w3.org/2004/02/skos/core# |
Data Model Entities and properties
This is the list of all the data model entities:
- Land Library Resource
- News
- Blog Post
- Event
- Organization
- Organization Type
- Person
- Region (Country, Continent/Subcontinent)
- LandVoc Theme
- LandVoc Concept
- Land Library Resource Type
- Language
- License
- Profile (of a person)
- Project
Entity: Land Library Resource
RDF types:
dct:BibliographicResource, bibo:Document, schema:CreativeWork, prov:Entity, edm:ProvidedCHO
URI pattern:
http://data.landportal.info/library/resource/{UUID}
Values: Content Type: Land Library Resource
| Properties | RDF predicates | Predicate type (details) |
|---|---|---|
| Title | dct:title, schema:name | literal |
| Subtitle | dct:alternative | literal |
| Abstract or Description | dct:description, schema:description, bibo:abstract | literal |
| Author(s), editor(s), contributor(s) | dc:contributor | literal |
| Corporate Author | dct:creator, schema:author | resource (Entity: Organization) |
| Resource Type | dct:type | resource (Entity: Land Library Resource Type) |
| Date of publication | dct:issued, schema:datePublished | literal (xsd:date) |
| Language | dct:language | resource (Entity: Language) |
| Publisher | dct:publisher, schema:publisher | resource (Entity: Organization) |
| Data Provider | prov:wasDerivedFrom, schema:provider, edm:dataProvider | resource (Entity: Organization) |
| Pages | dct:extent | literal |
| Duration | dct:extent, schema:duration | literal |
| ISBN / Resource ID | dct:identifier | literal |
| Geographical focus | dct:spatial, schema:spatialCoverage | resource (Entity: Region) |
| Themes | dct:subject, schema:about | resource (Entity: LandVoc Theme) |
| Related concepts (LandVoc) | dct:subject, schema:about | resource (Entity: LandVoc Concept) |
| Originally publish at | schema:url, bibo:uri, edm:isShownAt | resource |
| Resource URL | schema:url, bibo:uri, edm:isShownBy | resource |
| Attached file | schema:url, bibo:uri, edm:isShownBy | resource |
| Image/Thumbnail | schema:image, schema:thumbnailUrl | resource |
| License | dct:license, schema:license | resource (Entity: License) |
| Copyright details | dc:rights | literal |
Entity: News
RDF types:
schema:NewsArticle
URI pattern:
http://data.landportal.info/news/{UUID}
Values: Content Type: News
| Properties | RDF predicates | Predicate type (details) |
|---|---|---|
| Title | dct:title, schema:headline | literal |
| Author(s) | dc:creator, schema:author | literal |
| Date of publication | dct:issued, schema:datePublished | literal (xsd:date) |
| Language | dct:language, schema:inLanguage | resource (Entity: Language) |
| Geographical focus | dct:spatial, schema:spatialCoverage | resource (Entity: Region) |
| Themes | dct:subject, schema:about | resource (Entity: LandVoc Theme) |
| Related concepts (LandVoc) | dct:subject, schema:about | resource (Entity: LandVoc Concept) |
| Source | dct:source, schema:citation | resource |
| Attached file | dct:references | resource |
| Image/Thumbnail | schema:image, schema:thumbnailUrl | resource |
Entity: Blog Post
RDF types:
schema:BlogPosting, sioc:Post, foaf:Document
URI pattern:
http://data.landportal.info/blog-post/{UUID}
Values: Content Type: Blog Post
| Properties | RDF predicates | Predicate type (details) |
|---|---|---|
| Title | dct:title, schema:headline | literal |
| Body | schema:articleBody | literal |
| Author | sioc:has_creator | resource (Entity: Person) |
| Date of publication | dc:date, dc:created | literal (xsd:dateTime) |
| Geographical focus | dct:spatial, schema:spatialCoverage | resource (Entity: Region) |
| Themes | dct:subject, schema:about | resource (Entity: LandVoc Theme) |
| Related concepts (LandVoc) | dct:subject, schema:about | resource (Entity: LandVoc Concept) |
| Image/Thumbnail |
schema:image, schema:thumbnailUrl, schema:sharedContent |
resource |
Entity: Event
RDF types:
schema:Event
URI pattern:
http://data.landportal.info/event/{UUID}
Values: Content Type: Event
| Properties | RDF predicates | Predicate type (details |
|---|---|---|
| Name | dct:title, schema:name | literal |
| Body | dct:description, schema:description | literal |
| Start date | dct:date, schema:startDate | literal (xsd:date) |
| Image | schema:image | resource |
| Attached file | dct:references | resource |
| Contact / Event organiser | schema:organizer | literal |
| More information (Webpages) | schema:url | resource |
| Geographical focus | dct:spatial, schema:spatialCoverage | resource (Entity: Region) |
| Themes | dct:subject, schema:about | resource (Entity: LandVoc Theme) |
| Related Concepts | dct:subject, schema:about | resource (Entity: LandVoc Concept) |
Entity: Organization
RDF types:
foaf:Organization, schema:Organization, prov:Entity, org:Organization
URI pattern:
http://data.landportal.info/organization/{UUID}
Values: Content Type: Organization
| Properties | RDF predicates | Predicate type (details) |
|---|---|---|
| Name | dct:title, rdfs:label, schema:name, foaf:name | literal |
| Description | dct:description, schema:description | literal |
| Acronym | dct:identifier, org:identifier | literal |
| Logo | schema:image | resource |
| Website | schema:url, foaf:homepage | resource |
| Focal point | ||
| Phone number | ||
| Postal address | schema:address | literal |
| Location | - | - |
| Affiliated organization | - | resource (Entity: Organization) |
| Members | schema:member | literal |
| Working languages | lingvo:workingLanguage | resource (Entity: Language) |
| Attached file | dct:references | resource |
| Organization Type | dct:type | resource (Entity: Organization Type)) |
| Geographical focus | dct:spatial, schema:spatialCoverage | resource (Entity: Region) |
| Themes | dct:subject, schema:about | resource (Entity: LandVoc Theme) |
| Related concepts (LandVoc) | dct:subject, schema:about | resource (Entity: LandVoc Concept) |
Entity: Organization Type
RDF types:
skos:Concept
Values: Taxonomy: Organization types
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | rdfs:label, skos:prefLabel | literal |
| Description | skos:definition | literal |
| Synonym | skos:AltLabel | literal |
| Parent (Organization Type) | skos:broader | resource |
Entity: Person
RDF classes:
sioc:UserAccount
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | foaf:name | literal |
Entity: Region
It could be a country or a continent/subcontinent
Entity: Country
RDF types:
skos:Concept, schema:Place, dct:Location, geonames:Feature,lb:Country
URI pattern:
http://data.landportal.info/geo/{ISO 3166-1 alpha-3 code (aka ISO3)}
Graph (SPARQL):
http://countries.landportal.info
Values: Subset of Taxonomy: Regions
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | literal | |
| ISO 3166-1 alpha-3 code (aka ISO3) | literal | |
Entity: Continent/SubContinent
RDF types:
skos:Concept, schema:Place, dct:Location, geonames:Feature
URI pattern:
http://data.landportal.info/geo/{Area code (UN M.49)}
Graph (SPARQL):
http://regions.landportal.info
Values: Subset of Taxonomy: Regions
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | skos:prefLabel, dct:title, rdfs:label | literal |
| Description | skos:definition, dct:description, rdfs:comment | literal |
| Area code (UN M.49) | dct:identifier, skos:notation | literal |
| Synonyms | skos:altLabel | literal |
| Parent region | skos:broader | resource (Entity: Region) |
Entity: LandVoc Theme
RDF types:
skos:Concept
URI pattern:
http://data.landportal.info/voc/landvoc/theme/{theme-ID}
Values: Taxonomy: LandVoc Theme
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | skos:prefLabel, rdfs:label | literal |
| Description | skos:definition | literal |
| ID | skos:notation | literal |
| Synonym | skos:altLabel | literal |
| Image | schema:image | resource |
| Related LandVoc concepts | skos:related | resource (Entity: LandVoc Concept) |
Entity: LandVoc Concept (Curated)
RDF types:
skos:Concept
URI pattern:
Agrovoc URI
Values: Taxonomy: LandVoc Concepts
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | skos:prefLabel | literal (with lang) |
Entity: LandVoc Concept (Drupal Raw)
RDF types:
skos:Concept
URI pattern:
Agrovoc URI
Values: Taxonomy: LandVoc Concepts
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | skos:prefLabel, rdfs:label | literal |
| Description | skos:definition | literal |
| Synonym | skos:altLabel | literal |
| Agrovoc URI | skos:exactMatch, owl:sameAs | resource |
Entity: Land Library Resource Type
RDF types:
skos:Concept
Values: Taxonomy: Land Library Resource Types
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | rdfs:label, skos:prefLabel | literal |
| Description | skos:definition | literal |
| Synonym | skos:AltLabel | literal |
| Parent (LL Resource Type) | skos:broader | resource |
Entity: Language
RDF types:
skos:Concept, lvont:Language
URI pattern:
http://data.landportal.info/voc/language/{ISO 639-1 code}
Values: Taxonomy: Languages
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | dct:title, rdfs:label, skos:prefLabel | literal |
| Description | skos:definition | literal |
| Language code (ISO 639-1) | lvont:iso639P1Code | literal |
| Language code (ISO 639-3) | lvont:iso639P3Code | literal |
Entity: License
RDF types:
skos:Concept, odrl:Policy
URI pattern:
RDFLicense URI
Values: Taxonomy: Licenses
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Name | skos:prefLabel, rdfs:label | literal |
| Description | skos:definition | literal |
| Acronym | skos:notation, dct:identifier | literal |
| Synonym | skos:altLabel | literal |
| RDFLicense URI | skos:exactMatch, owl:sameAs | resource |
Entity: Profile
RDF types:
foaf:Person
URI pattern:
https://landportal.org/users/{username}
Values: People
| Properties | RDF predicates | Predicate type |
|---|---|---|
| Title | foaf:title | literal |
| First Name | foaf:firstName | literal |
| Last Name | foaf:lastName | literal |
| Description | dct:description, vivo:overview | literal |
| Picture | foaf:depiction, schema:image | resource |
| Public email | foaf:mbox | literal |
| Website | foaf:homepage | resource |
| Geographical focus | dct:spatial, schema:spatialCoverage | resource (Entity: Region) |
| Themes | dct:subject, schema:about | resource (Entity: LandVoc Theme) |
| Related concepts (LandVoc) | dct:subject, schema:about | resource (Entity: LandVoc Concept) |
Entity: Project
RDF types:
foaf:Project
URI pattern:
http://data.landportal.info/project/{UUID}
Values: Content Type: Project
| Properties | RDF predicates | Predicate type (details) |
|---|---|---|
| Name | dct:title, rdfs:label, schema:name, foaf:name | literal |
| Description | dct:description, schema:description | literal |
| ID | dct:identifier | literal |
| Acronym | - | literal |
| Logo | schema:image | resource |
| Extension | - | - |
| Project value | - | literal |
| Contact information | schema:contactPoint | literal |
| Websites of the project | schema:url, foaf:homepage | resource |
| Donors | - | resource (Entity: Organization) |
| Implementers | - | resource (Entity: Organization) |
| Associated staff | - | resource |
| Geographical focus | dct:spatial, schema:spatialCoverage | resource (Entity: Region) |
| Themes | dct:subject, schema:about | resource (Entity: LandVoc Theme) |
| Related concepts (LandVoc) | dct:subject, schema:about | resource (Entity: LandVoc Concept) |
| Data Provider | schema:provider | resource (Entity: Organization) |