http://www.openlinksw.com/weblog/oerling/
Orri Erling's Weblog
oerling@openlinksw.com
oerling@openlinksw.com
2009-11-23T13:08:48Z
Virtuoso Universal Server 05.12.3041
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Announcing Virtuoso Open-Source Edition v5.0.0
http://www.openlinksw.com/weblog/oerling/?date=2007-04-12#1183
2007-04-12T10:30:29Z
2007-04-12T06:30:30-04:00
<span style="font-family:sans-serif;">All, OpenLink Software are pleased to announce a new release of </span> <span style="font-family:sans-serif;"><a href="http://virtuoso.openlinksw.com/wiki/main/">Virtuoso</a> </span><span style="font-family:sans-serif;">, Open-Source Edition, version 5.0.0. This version includes: </span> <ul> <li> <span style="font-family:sans-serif;">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.</span> </li> <li> <span style="font-family:sans-serif;">Radical expansion of RDF support including</span> </li> </ul> <ul> <li> <span style="font-family:sans-serif;"> 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.)</span> </li> <li> <span style="font-family:sans-serif;">Full Text Indexing of Literal Objects in Triple Patterns (via Filter or magic bif:contains predicate applied to Literal Objects)</span> </li> <li> <span style="font-family:sans-serif;">Basic Inferencing (Subclass and Subproperty Support)</span> </li> <li> <span style="font-family:sans-serif;">SPARQL Aggregate Functions</span> </li> <li> <span style="font-family:sans-serif;">SPARQL Update Language Support (Updates, Inserts, Deletions in SPARQL)</span> </li> <li> <span style="font-family:sans-serif;">Improved Support of XML Schema Type System (including the use of XML Schema Complex Types as Objects of bif:xcontains predicate)</span> </li> <li> <span style="font-family:sans-serif;">Enhancements to the in-built SPARQL to SQL Compiler's Cost Optimizer</span> </li> <li> <span style="font-family:sans-serif;">Performance Optimizations to RDF VIEWs (SQL to RDF Mapping)</span> </li> </ul> <ul style="font-family:sans-serif;"> <li>Various bug-fixes</li> </ul> <span style="font-family:sans-serif;"> 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: </span><span style="font-family:sans-serif;color:#999999;">Virtuoso Open Source Edition: </span> <ul> <li> <span style="font-family:sans-serif;">Home Page</span><span style="font-family:sans-serif;">: </span> <span style="font-family:sans-serif;"><a href="http://virtuoso.openlinksw.com/wiki/main/">http://virtuoso.openlinksw.com/wiki/main/</a> </span> </li> <li> <span style="font-family:sans-serif;">Download Pa</span><span style="font-family:sans-serif;">ge: </span> <span style="font-family:sans-serif;"><a href="http://virtuoso.openlinksw.com/wiki/main/Main/VOSDownload">http://virtuoso.openlinksw.com/wiki/main/Main/VOSDownload</a> </span> </li> </ul> <span style="font-family:sans-serif;"> </span><span style="font-family:sans-serif;color:#999999;">OpenLink Data Spaces: </span> <ul> <li> <span style="font-family:sans-serif;">Home Page: </span> <span style="font-family:sans-serif;"><a href="http://virtuoso.openlinksw.com/wiki/main/Main/OdsIndex">http://virtuoso.openlinksw.com/wiki/main/Main/OdsIndex</a> </span> </li> <li> <span style="font-family:sans-serif;">SPARQL Usage Examples (re. SIOC, FOAF, AtomOWL, SKOS):</span> <span style="font-family:sans-serif;"><a href="http://virtuoso.openlinksw.com/wiki/main/Main/ODSSIOCRef">http://virtuoso.openlinksw.com/wiki/main/Main/ODSSIOCRef</a></span> </li> <li> <span style="font-family:sans-serif;">Interactive SPARQL Demo: </span> <span style="font-family:sans-serif;"><a href="http://demo.openlinksw.com/isparql/">http://demo.openlinksw.com/isparql/</a> </span> </li> </ul> <span style="font-family:sans-serif;"> </span><span style="font-family:sans-serif;color:#999999;">OpenLink AJAX Too lkit (OAT): </span> <ul> <li> <span style="font-family:sans-serif;">Project Page: </span> <span style="font-family:sans-serif;"><a href="http://sourceforge.net/projects/oat">http://sourceforge.net/projects/oat</a> </span> </li> <li> <span style="font-family:sans-serif;">Live Demonstration: </span> <span style="font-family:sans-serif;"><a href="http://demo.openlinksw.com/DAV/JS/oat/index.html">http://demo.openlinksw.com/DAV/JS/oat/index.html</a> </span><span style="font-family:sans-serif;"> </span> </li> </ul> <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/SPARQL" rel="tag">SPARQL</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/virtuoso" rel="tag">virtuoso</a> </p>
Recent Virtuoso Developments
http://www.openlinksw.com/weblog/oerling/?date=2006-09-19#1043
2006-09-19T10:59:30Z
2006-09-19T07:45:29-04:00
<p>We have been extensively working on virtual database refinements. There aremany SQL cost model adjustments to better model distributed queries and wenow support direct access to Oracle and Informix statistics system tables.Thus, when you attach a table from one or the other, you automatically getup to date statistics. This helps <a href="http://virtuoso.openlinksw.com/wiki/main/">Virtuoso</a> optimize distributed queries.Also the documentation is updated as concerns these, with a new section ondistributed query optimization.</p> <p>On the applications side, we have been keeping up with the SIOC RDF ontologydevelopments. All ODS applications now make their data available as SIOCgraphs for download and SPARQL query access.</p> <p>What is most exciting however is our advance in mapping relational data intoRDF. We now have a mapping language that makes arbitrary legacy data in <a href="http://virtuoso.openlinksw.com/wiki/main/">Virtuoso</a> or elsewhere in the relational world RDF queriable. We will putout a white paper on this in a few days.</p> <p>Also we have some innovations in mind for optimizing the physical storage ofRDF triples. We keep experimenting, now with our sights set to the highend of triple storage, towards billion triple data sets. We areexperimenting with a new more space efficient index structure for betterworking set behavior. Next week will yield the first results.</p> <a href="http://www.technorati.com/tags/sql" rel="tag">SQL</a> <a href="http://www.technorati.com/tags/database" rel="tag">Database</a> <a href="http://www.technorati.com/tags/databases" rel="tag">Databases</a> <a href="http://www.technorati.com/tags/virtuoso" rel="tag">Virtuoso</a> <a href="http://www.technorati.com/tags/programming" rel="tag">Programming</a> <a href="http://www.technorati.com/tags/semantic%20web" rel="tag">Semantic Web</a> <a href="http://www.technorati.com/tags/sparql" rel="tag">SPARQL</a>
Recent Virtuoso Developments
http://www.openlinksw.com/weblog/oerling/?date=2006-09-19#1043
2006-09-19T10:59:30Z
2006-09-19T07:45:29-04:00
<p>We have been extensively working on virtual database refinements. There aremany SQL cost model adjustments to better model distributed queries and wenow support direct access to Oracle and Informix statistics system tables.Thus, when you attach a table from one or the other, you automatically getup to date statistics. This helps <a href="http://virtuoso.openlinksw.com/wiki/main/">Virtuoso</a> optimize distributed queries.Also the documentation is updated as concerns these, with a new section ondistributed query optimization.</p> <p>On the applications side, we have been keeping up with the SIOC RDF ontologydevelopments. All ODS applications now make their data available as SIOCgraphs for download and SPARQL query access.</p> <p>What is most exciting however is our advance in mapping relational data intoRDF. We now have a mapping language that makes arbitrary legacy data in <a href="http://virtuoso.openlinksw.com/wiki/main/">Virtuoso</a> or elsewhere in the relational world RDF queriable. We will putout a white paper on this in a few days.</p> <p>Also we have some innovations in mind for optimizing the physical storage ofRDF triples. We keep experimenting, now with our sights set to the highend of triple storage, towards billion triple data sets. We areexperimenting with a new more space efficient index structure for betterworking set behavior. Next week will yield the first results.</p> <a href="http://www.technorati.com/tags/sql" rel="tag">SQL</a> <a href="http://www.technorati.com/tags/database" rel="tag">Database</a> <a href="http://www.technorati.com/tags/databases" rel="tag">Databases</a> <a href="http://www.technorati.com/tags/virtuoso" rel="tag">Virtuoso</a> <a href="http://www.technorati.com/tags/programming" rel="tag">Programming</a> <a href="http://www.technorati.com/tags/semantic%20web" rel="tag">Semantic Web</a> <a href="http://www.technorati.com/tags/sparql" rel="tag">SPARQL</a>