LodView
The digital interface for navigating LOD
LodView is the tool and graphical interface that, through SPARQL and RDF, allows the user to explore the data available in a database, making relationships between different resources and objects in the database clearer.
It’s main features are:
displaying understandable data through tables, charts, or other visual representations;
interactively exploring contents by navigating through various resources and relationships present in the dataset;
searching and querying the database using specific filters or criteria defined by the user, allowing them to refine the search.
LodView
Start searching: access LodView
FAQ
Below you can see some query examples
How to write a query?
To write a correct SPARQL query, it is necessary to follow the subject-predicate-object structure.
The basic structure is:
SELECT ?soggetto ?predicato ?oggetto
WHERE { ?soggetto ?predicato ?oggetto}
How to look for Luigi Einaudi’s photograph?
According to the basic structure, if you are looking for all the photos representing Luigi Einaudi, the query would be:
select distinct * where {
?document a <http://xmlns.com/foaf/0.1/Document>.
?document rdfs:label ?labelDocument.
?document <http://purl.org/dc/elements/1.1/type> 'fotografia' .
?document <http://xmlns.com/foaf/0.1/depiction> ?urlFoto}
How to search for writings about Luigi Einaudi?
According to the basic structure, if you are looking for all the writings about Luigi Einaudi, the query would be:
select distinct * where
{?opera a <http://id.loc.gov/ontologies/bibframe/Instance>.
?opera rdfs:label ?titolo.
?opera <http://id.loc.gov/ontologies/bibframe/subject> 'Einaudi, Luigi'}
If you are looking for all the writings by Luigi Einaudi, the query would be:
select distinct * where
{?opera a <http://id.loc.gov/ontologies/bibframe/Instance>.
?opera rdfs:label ?titolo.
?opera <http://schema.org/author> ?autore.
FILTER (?autore = <https://dati.fondazioneeinaudi.it/lod/resource/agent/IT_ICCU_CFIV_026671>)}
How do you filter search results?
According to the basic structure, if you would like to filter search results to obtain videos about Luigi Einaudi. The query would be:
select distinct * where { ?document a <http://xmlns.com/foaf/0.1/Document>.
?document rdfs:label ?labelDocument.
?document <http://purl.org/dc/elements/1.1/type> 'video' .
?document <https://schema.org/url> ?urlVideo}
How do you get resources from a specific historical period?
According to the basic structure, if you would like to get resources from the period of the Presidency of the Republic, the query would be:
select distinct * where {
?document a <http://xmlns.com/foaf/0.1/Document>.
?document rdfs:label ?labelDocument.
?document <http://purl.org/dc/elements/1.1/date> ?date .
FILTER (regex(str(?labelDocument),'Presidente della Repubblica','i'))}
How to search for sources that have been used in the project?
If you would like to get the list of sources used in the project, the query would be:
select distinct * where {
?institute a <http://culturalis.org/cult/0.1#CulturalInstitutionOrSite>.
?institute rdfs:label ?labelInstitute.}
