http://www.openlinksw.com/blog/vdb/blog/
OpenLink Virtuoso (Product Blog)
A great place to track Virtuoso's rapid evolution.
kidehen@openlinksw.com
kidehen@openlinksw.com
2009-11-23T11:47:13Z
Virtuoso Universal Server 05.12.3041
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Announcing Virtuoso Open-Source Edition v5.0.0
http://www.openlinksw.com/blog/vdb/blog/?date=2007-04-12#1184
2007-04-12T13:48:34Z
2007-04-12T09:50:10-04:00
All, OpenLink Software are pleased to announce a new release of <a href="http://virtuoso.openlinksw.com/wiki/main/">Virtuoso</a>, Open-Source Edition, version 5.0.0. This version includes: <ul> <li>Significant rewrite of database engine resulting in 50%-100% improvement on single CPU and in some cases up to 300% on multiprocessor CPUs by decreasing resource-contention between threads and other optimizations.</li> <li>Radical expansion of RDF support including</li> </ul> <ul> <li>In-built middleware (called the Sponger) for transforming non-RDF into RDF "on the fly" (e.g. producing Triples from Microformats, REST-style Web Services, and (X)HTML etc.)</li> <li>Full Text Indexing of Literal Objects in Triple Patterns (via Filter or magic bif:contains predicate applied to Literal Objects)</li> <li>Basic Inferencing (Subclass and Subproperty Support)</li> <li>SPARQL Aggregate Functions</li> <li>SPARQL Update Language Support (Updates, Inserts, Deletions in SPARQL)</li> <li>Improved Support of XML Schema Type System (including the use of XML Schema Complex Types as Objects of bif:xcontains predicate)</li> </ul> <ul> <li>Enhancements to the in-built SPARQL to SQL Compiler's Cost Optimizer</li> <li>Performance Optimizations to RDF VIEWs (SQL to RDF Mapping)</li> <li>Various bug-fixes</li> </ul> NOTE: Databases created with earlier versions of Virtuoso will be automatically upgraded to Virtuoso 5.0 but after upgrade will not be readable with older Virtuoso versions. For more information please see: Virtuoso Open Source Edition: Home Page: <a href="http://virtuoso.openlinksw.com/wiki/main/">http://virtuoso.openlinksw.com/wiki/main/</a> Download Page: <a href="http://virtuoso.openlinksw.com/wiki/main/Main/VOSDownload">http://virtuoso.openlinksw.com/wiki/main/Main/VOSDownload</a> OpenLink Data Spaces: Home Page: <a href="http://virtuoso.openlinksw.com/wiki/main/Main/OdsIndex">http://virtuoso.openlinksw.com/wiki/main/Main/OdsIndex</a> SPARQL Usage Examples (re. SIOC, FOAF, AtomOWL, SKOS): <a href="http://virtuoso.openlinksw.com/wiki/main/Main/ODSSIOCRef">http://virtuoso.openlinksw.com/wiki/main/Main/ODSSIOCRef</a> Interactive SPARQL Demo: <a href="http://demo.openlinksw.com/isparql/">http://demo.openlinksw.com/isparql/</a> OpenLink AJAX Toolkit (OAT): Project Page: <a href="http://sourceforge.net/projects/oat">http://sourceforge.net/projects/oat</a> Live Demonstration: <a href="http://demo.openlinksw.com/DAV/JS/oat/index.html">http://demo.openlinksw.com/DAV/JS/oat/index.html</a> <p style="text-align:right;font-size:10px;">Technorati Tags: <a href="http://www.technorati.com/tag/database" rel="tag">database</a>, <a href="http://www.technorati.com/tag/databases" rel="tag">databases</a>, <a href="http://www.technorati.com/tag/open-source" rel="tag">open-source</a>, <a href="http://www.technorati.com/tag/OpenLink" rel="tag">OpenLink</a>, <a href="http://www.technorati.com/tag/RDBMS" rel="tag">RDBMS</a>, <a href="http://www.technorati.com/tag/RDF" rel="tag">RDF</a>, <a href="http://www.technorati.com/tag/semantic web" rel="tag">semantic web</a>, <a href="http://www.technorati.com/tag/Semantic Web" rel="tag">Semantic Web</a>, <a href="http://www.technorati.com/tag/SPARQL" rel="tag">SPARQL</a>, <a href="http://www.technorati.com/tag/virtuoso" rel="tag">virtuoso</a> </p>