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Nesstar is a "Data Web", a Semantic Web Application for Statistical Data and Metadata. Using Nesstar, statistical data and metadata can be published on the Web in a vendor and technology independent way.
The Nesstar system is implemented on top of NEOOM, a lightweight web and object-oriented middleware that aims to provide most of the advantages of object-orientation while maintaining full compatibility with the existing Web infrastructure. To ensure compatibility with the Web it uses an extension of the Resource Description Framework as its Interface Definition Language and the Hypertext Transfer Protocol as its network protocol. NEOOM is closely based on Web and Semantic Web standards, in particular RDF, RDF Schema, HTML and HTTP. So closely, actually, that more than a distinct framework it can be considered as just a set of guidelines on how to use off the shelf (Semantic) Web technology to build distributed object-oriented systems. Though it was developed to support Nesstar NEOOM is domain independent and could be used as a reference architecture for all kinds of semantic web applications.
Earlier and related documents:
The conceptual core of the Nesstar system is the Nesstar Object Model, a UML model of Statistical Data and Metadata. The latest version of the model can be browsed on the umldoc.org site.
Nesstar servers are accessible either through the simple HTTP/RDF interface defined by NEOOM or, more conveniently, through an object-oriented Java API.
You can browse the Stable 3.5 Javadocs and download the SDK as a single Zip file.
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Page last updated on the 1st of December 2003.