From KDE TechBase


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