RDF Graph Database per Linked Data

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1 RDF Graph Database per Linked Data Next Generation Open Data, come sfruttare l innovazione tecnologica per creare nuovi scenari e nuove opportunità. 1 Copyright 2011, Oracle and/or its affiliates. All rights 30 Maggio 2013

2 Linked data da Wikipedia 2 Copyright 2011, Oracle and/or its affiliates. All rights

3 Is your data 5 Star? Available on the web (whatever format), but with an open license Available as machine-readable structured data (e.g., excel instead of an image scan) As before, but using a non-proprietary format (e.g., CSV instead of excel) All the above, plus use open standards (RDF & Co.) to identify things, so that people could point at your stuff 3 Copyright 2011, Oracle and/or its affiliates. All rights All the above, plus link your data to other people s data to provide context

4 The LOD cloud, March 2008 Courtesy of Richard Cyganiak and Anja Jentzsch 4 Copyright 2011, Oracle and/or its affiliates. All rights

5 The LOD cloud, March Copyright 2011, Oracle and/or its affiliates. All rights

6 The LOD cloud, September Copyright 2011, Oracle and/or its affiliates. All rights

7 Interoperabilità semantica Linee Guida per L Iteroperabilità Semantica Attraverso i Linked Open Data... Secondo quanto previsto dall Agenda Digitale Europea [1], ogni paese membro dell UE deve allineare, entro il 2013, il proprio framework di interoperabilità nazionale (nel caso italiano, come definito dal CAD, il Sistema Pubblico di Connettività e Cooperazione) al framework europeo di interoperabilità (i.e., l EIF - European Interoperability Framework). Il modello EIF si basa su tre livelli di interoperabilità: l interoperabilità tecnica, l interoperabilità semantica e l interoperabilità organizzativa; a questi si aggiungono... 7 Copyright 2011, Oracle and/or its affiliates. All rights

8 LinkedData, Contesto Tecnologico Semantic Web DB-Graph RDF Sematic Graph Ontology, Graph Modeling Querying Semantic Data Sparql, geosparql Inference 8 Copyright 2011, Oracle and/or its affiliates. All rights

9 Graph modeling 9 Copyright 2011, Oracle and/or its affiliates. All rights

10 Oracle Spatial and Graph option Graph Features Network Data Model graph RDF Semantic graph Oracle Database 10g Release Oracle Database 11g Release , 2008 Oracle introduces first commercial database with native RDF, OWL 10 Copyright 2011, Oracle and/or its affiliates. All rights

11 Merging RDF models Step 1: Merge RDF Same nodes (URIs) join automatically 11 Copyright 2011, Oracle and/or its affiliates. All rights

12 Enriching you model with Relationships and Rulesregole e relazioni Add relationships and rules (Relationships are also RDF) 12 Copyright 2011, Oracle and/or its affiliates. All rights

13 Flexible metadata model for new app requirements Step 3: Define Green model (Making use of Red & Blue models) 13 Copyright 2011, Oracle and/or its affiliates. All rights

14 Ease of data integration no change to legacy apps! What the Blue app sees: No difference! 14 Copyright 2011, Oracle and/or its affiliates. All rights

15 LOD Metadata Layer for Federation RDF graph is an enterprise metadata framework. The metadata graph associates underlying instance data to other data resources based on their semantics. This linking of resources enables interoperability between apps that exchange data. 15 Copyright 2011, Oracle and/or its affiliates. All rights

16 Architecture for LOD Deployments XML/SOAP XML/RDF XML/JSON Jena / Joseki Service Layer Views SOAP WS III Extractor Service SPARQL Endpoint REST API Suggest Hierarchical JSON Service Data Services CATEGORIES / TERMINOLOGY ( ontology, vocabularies ) Oracle Graph Store SEMANTIC CONTENT ( inter concept relations ) REFERENTIAL DATA ( pointers ) Parsing, Translation, Validation, Normalization, Classification, Rules 16 Copyright 2011, Oracle and/or its affiliates. All rights

17 Oracle Spatial and Graph option Semantic Framework Represents Graph relationships as triples in compressed, partitioned tables Supports quads/named graphs RDFS, OWL and user-defined inferencing, Parallel execution and incremental modes Kernel and SQL-layer enhancements for optimized indexing and access of triple data Partitioning and local indexing by application table Support for Oracle Exadata, RAC, SQL*Loader direct path load, Parallelism, Oracle Label Security Scales to 100 s of billions of triples Access from OBI EE, Oracle BPM, Oracle Advanced Analytic (R and ODM) through Oracle s SPARQL gateway 17 Copyright 2011, Oracle and/or its affiliates. All rights

18 Oracle Spatial and Graph option Graph Features RDF Semantic Graph LOD Vocab Support: W3C Simple Knowledge Organization System (SKOS) New rulebase supporting the emerging SKOS standard on RDF Enforces integrity constraints Dublin Core SNOMED NCI (National Cancer Institute ) FOAF (Friend of a Friend) GeoRSS SIOC (Semantically-Interlinked Online Communities) GoodRelations (ecommerce Product Ontology) Support for SPARQL, GeoSPARQL and mixed SPARQL and SQL queries Patented Table Function Rewrite converts SPARQL to SQL Packaged with enhanced Open Source Tools: Jena, Sesame, Joseki Web Services W3C standards RDF, RDFS, OWL2 RL, OWL2EL, SKOS, RDB2RDF, RDFa Integration with PelletDb and TrOWL for DL semantic 18 Copyright 2011, Oracle and/or its affiliates. All rights

19 Industries Have Already Adopted the Concept Life Sciences Finance Media Networks & Communications Defense & Intelligence Public Sector Industries Hutchinson 3G Austria Thomson Reuters Using semantic linking to integrate and analyze Business Data with Big Data 19 Copyright 2011, Oracle and/or its affiliates. All rights

20 20 Copyright 2011, Oracle and/or its affiliates. All rights Q&A

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