Tracker is a semantic data storage for desktop and mobile devices. Tracker uses W3C standards for RDFontologies using Nepomuk with SPARQL to query and update the data.
Tracker is a a data store, an indexer and a search engine that allows the user to find and link data easily.
Tracker uses a well defined data model that applications can rely on to store and recover their information. That data model is defined using a semantic web artifact called ontology. An ontology defines the relationships between the information stored in the repository.
An EU-funded project called Nepomuk was started to define some of the core ontologies to be modelled on the Desktop. Tracker uses this to define the data's relationships in a database.
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