Linked Data Spaces, Data Portability & Access

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Linked Data Spaces, Data Portability & Access


What’s The Problem?

We Need To Free Data from the Tyranny of

Application Lock-in

(Silo Busting!)


Problem Origins

Over emphasis on Applications at the expense of their underlying:

Database Engines and Data Models (Relational, Hierarchical, Graph)

Data Access Mechanisms (HTTP based Linked Data, SQL CLIs, Web Services)

Data Query Mechanisms (SPARQL, SQL, XQuery/XPath, etc)


Problem Vectors

Identity Real World Object Identity

The Web Exponential Growth of Identity Challenged

Applications (SaaS)

Socially induced User Generated Content without Explicit Identity

The Cloud Infrastructure that reduces cost of producing Identity

Challenged Applications.


Aspects of Data Portability

Data Mobility (Import/Export) via standard data formats RSS, Atom, OPML Microformats (XFN, hCard, hCalendar,

Microdata) RDF Model Data Representation Formats

RDFa JSON N3 / Turtle XML - RDF/XML, TriX, TriG, and others.


Aspects of Data Access

(C)reate (R)ead (U)pdate (D)elete (CRUD) oriented Data Access by Reference

Relational Database APIs

Generic - ODBC, JDBC, ADO.NET, OLE-DB

Database Specific – Oracle, SQL Server, DB2, MySQL etc.

Web of Linked Data (Federated Graph Database)

RESTful access to Data Items (Objects or Entities) & Their Containers.


Why is This Important? Your Data belongs to You!

Information Overload is here!

User Generated Content is growing exponentially

Web Application Silos are on the rise courtesy of Web based, and Cloud hosted SaaS solutions

Still only 24 hrs in a day!

You are an Individual

Web Individuality is no longer a trivial pursuit

No Human is an Island (Ubuntu!).


How We Bust Data Silos

Use platforms that engender Federated Identity via:

Personal HTTP Identifiers (WebIDs or Personal URIs)

WebIDs bound to X.509 Certificates

Association of WebIDs with accounts in existing Data Silos (Web 2.0 Apps & Services)

Exposure of Linked Data Spaces built on shared schemas / ontologies.


How Web-Scale Data Access Should Work

You Get Yourself a WebID via an Identity Service Provider: self hosted 3rd party hosted Profile as a Service (PaaS) solution

Associate Your WebID with existing Silo-Accounts: Blogs, Wikis, Social-Networks, Bookmarks, Photo

Galleries, Discussions etc.

Associate Your WebID with existing OpenID and OAuth services.


Personal Data Space Example using ODS

You Get Yourself a WebID via one of the following ODS instance forms:

a self hosted (via an Amazon EC2 AMI or Hosting Services Provider)

shared SaaS service (MyOpenLink.NET)

Associate Your WebID with existing Silos:

Use the ODS Profile Page to Identify online accounts and home pages for - Blogs, Wikis, Social-Networks, Bookmarks, Photo Galleries, Discussions etc.

Your ODS Account is Your WebID, OpenID with OAuth upstreaming (pushback) to associated accounts.


WebID: <http://kingsley.idehen.name/dataspace/person/kidehen#this>

An ODS Based Personal Profile Page


Linked Profile Data Spaces


Some ODS Specific Features

Every Data Item has a Unique HTTP scheme Identifier

Linked Data Spaces are based on shared schemas

SIOC, FOAF, GoodRelations, Dublin Core, SKOS, Music

Ontology, Bibliographic Ontology, Annotea etc.

Upstreaming (pushback) via Publishing Protocols

Linked Data Spaces are traversable via HTTP user

agents

All Data is SPARQL Accessible.


Additional Information

Live Instances:

http://myopenlink.net/ods

Open Source Edition Information

http://ods.openlinksw.com/wiki/ODS/

http://myopenlink.net:8890/ods

Linked Data Spaces, Data Portability & Access

Technology

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