Difference between revisions of "Development/Tutorials/Metadata/Nepomuk"

Revision as of 13:42, 23 August 2012

Nepomuk

RDF and Ontologies in Nepomuk

An introduction to RDF and the usage of ontologies in Nepomuk.

Nepomuk Quickstart

How to use Nepomuk resources in a quick and painless way without much fuss.

Data Layout in Nepomuk

An overview of which and how data is stored in Nepomuk.

Handling Resources with Nepomuk

Nepomuk is the KDE library which provides easy access to metadata in the Nepomuk system. Learn how to make your application create and read metadata using the Nepomuk system.

Using the Nepomuk Query API

Starting with KDE 4.4 Nepomuk provides a desktop query API.

Advanced Queries

The real power of Nepomuk can only be exposed when performing fancy queries on the data repository. This tutorial provides an introduction to semantic and full text queries in Nepomuk.

The Nepomuk Server and the Architecture of the Nepomuk subsystem

The Nepomuk Server hosts the main Nepomuk data repository and can be accessed directly via a Soprano API.

Nepomuk Services

The Nepomuk Server manages a set of Nepomuk services.

• Storage Service The probably most important service hosts the Nepomuk data repository using Soprano.
• Ontology Loader Makes sure installed ontologies such as RDF, RDFS, NRL, or Xesam are loaded into the storage repository.
• File Watch Service Monitors the file system for changes and updates the file resource paths and URIs in Nepomuk.
• Strigi Service Controls Strigi, the file indexing tool which extracts metadata from files and stores it into the storage repository.
• Query Service Provides persistant query folders.