Using RDF Linked Data
To Solve
Real Problems
© 2008 OpenLink Software, All rights reserved.

Situation Analysis
Agility is the timeless pursuit of
enterprises and individuals alike.
In all cases, access, integration,
and dissemination of data is
pivotal.
© 2008 OpenLink Software, All rights reserved.

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.
© 2006 OpenLink Software, All rights reserved.

© 2008 OpenLink Software, All rights reserved.

Problems
 Identity
 - People
 - Places
 - Ideas
 - Other Things
 Data Access & Integration
© 2008 OpenLink Software, All rights reserved.

Problem - Identity
 Who Am I?
 What are my credentials?
 Why do I repeat the above each time,
across:
 Each Web App.
 Each Enterprise App.
© 2008 OpenLink Software, All rights reserved.

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).
© 2008 OpenLink Software, All rights reserved.

Solution – Identity Problem Contd.
With your HTTP ID in place you can then achieve
the following:
 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.
© 2008 OpenLink Software, All rights reserved.

Simple FOAF+SSL Demo
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© 2008 OpenLink Software, All rights reserved.

Collective Intelligence
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Linked Data – Data Aggregation
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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.
© 2008 OpenLink Software, All rights reserved.

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.
© 2008 OpenLink Software, All rights reserved.

Conceptual Views of Disparate Data
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RDBMS to Linked Data – Demo 1
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RDBMS to Linked Data – Demo 2
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Self Filtering Find (Search++)
© 2006 OpenLink Software, All rights reserved.

© 2008 OpenLink Software, All rights reserved.

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/
© 2006 OpenLink Software, All rights reserved.