Database Technologies for Semantic Web
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Transcript of Database Technologies for Semantic Web
Database Technologies for Semantic Web
Edilson Ribeiro da Silva JúniorJosé Maria Silveira Neto
TripleStore
triple {subject, predicate, object} TripleStore is an RDF Database. add(triple), remove(triple), triples(pattern), ...
Sesame
An opensource framework for querying, inferencing and analyzing RDF data.
SeSQL BSDstyle license Java PostgreSQL, MySQL, Microsoft SQL Server and
Oracle databases.
SeSQL
Sesame RDF Query Languag, ”circle” is a new RDF/RDFS query language that is currently
being developed by Aduna as part of Sesame. It combines the best features of other (query) languages (RQL, RDQL, NTriples, N3) and adds some of its own.
Graph transformation, RDF Schema support, XML Schema datatype support, Expressive path expression syntax, Optional path matching.
Virtuoso
objectrelational SQL database builtin web server SPARQL GPLv2 ODBC, JDBC, ADO .Net and OLE/DB. C, Java, etc.
Jena
HP Labs Semantic Web Programme RDF API Reading and writing RDF in RDF/XML, N3 and N
Triples OWL API Inmemory and persistent storage SPARQL query engine Jena SDB BSDstyle license
R2RQ
D2RQ is a declarative language to describe mappings between relational database schemata and OWL/RDFS ontologies. The D2RQ Platform uses these mapping to enables applications to access a RDFview on a nonRDF database through the Jena and Sesame APIs, as well as over the Web via the SPARQL Protocol and as Linked Data.
Large TripleStores Garlik JXT (9.8B)
YARS2 (7B)
BigOWLIM (1.85B)
Virtuoso OpenSource Edition (1B+)
AllegroGraph (1B)
Jena SDB (650M)
Mulgara (500M)
RDF gateway (262M)
Jena with PostgreSQL (200M)
Kowari (160M)
3store with MySQL 3 (100M)
Sesame (70M)
References
http://rdflib.net/2005/10/26/rdflib2.2.4/doc/triple_store.html http://en.wikipedia.org/wiki/Triplestore http://recuperaciondeinformacion.itrello.com/SeRQLen.html http://esw.w3.org/topic/LargeTripleStores http://www4.wiwiss.fuberlin.de/bizer/D2RQ/