Resource Description Framework (RDF) is an open standard by W3C for describing concepts and resources digitally with semantic meaning. The SPARQL standard is syntax and protocol for making querying and manipulating datasets in RDF format. The standard is comprehensive and includes everything from searching, updating, exporting and maintaining RDF datasets and can be compared with the SQL standard for relational databases. With the difference that SPARQL is applied to datasets with triplets pattern – subject, predicate, object and has a semantic meaning. The guide is based on the previously presented knowledge graph with artists and paintings.
Continue reading “RDF elementary guide part 3: SPARQL querying knowledge graphs and datasets with semantic meaning”State-of-art of linked data and semantic web
Resource description framework (RDF) is a technical framework for data exchange and interpretation of concepts published on the Web. This used to be called the semantic web, which never became a reality. Now, almost 20 years after its launch, interest seems to be on the rise to address some of the issues that the digitalised society faces.
Continue reading “State-of-art of linked data and semantic web”