A belinkelt cikkekben, oldalakon le van írva minden:
The current implementation of Nepomuk-KDE contains an implementation of an RDF repository which stores all the data. According to Sebastian the data can be accessed by DBUS which is the default way to communicate in Nepomuk-KDE (of course).
[...]
The definitions (aka Ontologies) how the data like tags, comments and so on should be stored in the repository can be found in kmetadata/ontologies in KDE’s svn or in the directory $KDEDIR/share/apps/knepomuk/ontologies if you install kmetadata on your hard disk.
A cikk itt.
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trey @ gépház