Igor Suhorukov: A knowledge base without a second database: Oxigraph’s SPARQL in PostgreSQL 19

pg_knowledge_base runs Oxigraph’s SPARQL engine inside PostgreSQL 19. RDF triples live in ordinary tables, R2RML mappings bring existing tables into the same SPARQL queries, and Oxigraph’s HTTP endpoints are still there for any SPARQL client, while transactions, replicas and backups come from PostgreSQL.