OpenLink Virtuoso - Linked Data

Using RDF Linked Data


To Solve


Real Problems

Situation Analysis

What is Linked Data?

• A term coined by Tim Berners-Lee that describes HTTP-based Data Access by Reference for the Web
• An unobtrusive tweak to the Web that accentuates its core architecture
  • Use of HTTP based Identifiers for Naming "Things"
  • Implicit association of Identifiers with their metadata.

Using RDF Linked Data To Solve Real Problems

Problems

• Identity
  • - People
  • - Places
  • - Ideas
  • - Other Things
• Data Access & Integration

Problem - Identity

• Who Am I?
• What are my credentials?
• Why do I repeat the above each time, across:
  • Each Web App.
  • Each Enterprise App.

Solution - Identity Problem

Get Yourself a Data Space that delivers:

• A personal HTTP based ID (a URI)
• Bind Your ID to an X.509 Certificate
• Bind Certificate to your HTTP User Agents (e.g., Browser)
• Bind Certificate to your Profile (e.g., a FOAF space).

Solution - Identity Problem Contd.

• Visit places on HTTP networks with no login and credentials repetitions (Intranet or Web)
• Use ACL based policies to confine data access to specific groups of people.

Simple FOAF+SSL Demo

My Data Spaces

Collective Intelligence

Linked Data - Data Aggregation

Problem: Data Access & Integration

• Enterprise Silos generated by applications bound to:
  • Disparate DBMS Engines & Data Models
  • Disparate Development Frameworks
• Data Silos on the Web such as:
  • Social Networking Services
  • Discussion Forums
  • Blogs
  • Wikis etc.

Solution - Data Access & Integration

• Use Middleware to generate Conceptual Views over Heterogeneous Data Sources
• RDBMS to RDF mapping technology e.g., RDF Views over RDBMS data sources
• RDFizers to convert unstructured and semi-structured data to RDF.

Conceptual Views of Disparate Data

RDBMS to Linked Data - Demo 1

RDBMS to Linked Data - Demo 2

Self Filtering Find (Search++)

Let Us Link Your Data

Additional Information

• OpenLink Software:
  • http://www.openlinksw.com/
  • http://virtuoso.openlinksw.com/
  • http://www.openlinksw.com/blog/~kidehen/ (weblog)
• Linking Open Data Community Projects
  • http://linkeddata.org/
  • http://dbpedia.org/