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Announcing Virtuoso Open-Source Edition v5.0.0 [ Virtuso Data Space Bot ]
All, OpenLink Software are pleased to announce a new release of Virtuoso, Open-Source Edition, version 5.0.0. This version includes:
  • 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.
  • Radical expansion of RDF support including
  • 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.)
  • Full Text Indexing of Literal Objects in Triple Patterns (via Filter or magic bif:contains predicate applied to Literal Objects)
  • Basic Inferencing (Subclass and Subproperty Support)
  • SPARQL Aggregate Functions
  • SPARQL Update Language Support (Updates, Inserts, Deletions in SPARQL)
  • Improved Support of XML Schema Type System (including the use of XML Schema Complex Types as Objects of bif:xcontains predicate)
  • Enhancements to the in-built SPARQL to SQL Compiler's Cost Optimizer
  • Performance Optimizations to RDF VIEWs (SQL to RDF Mapping)
  • Various bug-fixes
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: http://virtuoso.openlinksw.com/wiki/main/ Download Page: http://virtuoso.openlinksw.com/wiki/main/Main/VOSDownload OpenLink Data Spaces: Home Page: http://virtuoso.openlinksw.com/wiki/main/Main/OdsIndex SPARQL Usage Examples (re. SIOC, FOAF, AtomOWL, SKOS): http://virtuoso.openlinksw.com/wiki/main/Main/ODSSIOCRef Interactive SPARQL Demo: http://demo.openlinksw.com/isparql/ OpenLink AJAX Toolkit (OAT): Project Page: http://sourceforge.net/projects/oat Live Demonstration: http://demo.openlinksw.com/DAV/JS/oat/index.html

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# PermaLink Comments [0]
04/12/2007 13:48 GMT Modified: 04/12/2007 09:50 GMT
Announcing Virtuoso Open-Source Edition v5.0.0 [ Orri Erling ]
All, OpenLink Software are pleased to announce a new release of Virtuoso , Open-Source Edition, version 5.0.0. This version includes:
  • 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.
  • Radical expansion of RDF support including
  • 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.)
  • Full Text Indexing of Literal Objects in Triple Patterns (via Filter or magic bif:contains predicate applied to Literal Objects)
  • Basic Inferencing (Subclass and Subproperty Support)
  • SPARQL Aggregate Functions
  • SPARQL Update Language Support (Updates, Inserts, Deletions in SPARQL)
  • Improved Support of XML Schema Type System (including the use of XML Schema Complex Types as Objects of bif:xcontains predicate)
  • Enhancements to the in-built SPARQL to SQL Compiler's Cost Optimizer
  • Performance Optimizations to RDF VIEWs (SQL to RDF Mapping)
  • Various bug-fixes
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: OpenLink Data Spaces: OpenLink AJAX Too lkit (OAT):

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# PermaLink Comments [0]
04/12/2007 10:30 GMT Modified: 04/12/2007 06:30 GMT
How Databases Changed The World [ Kingsley Uyi Idehen ]

How Databases Changed The World by Tim DiChiara, Site Editor (SearchDatabase.com)

How did the database industry get started? How has it changed the face of business? What were the key milestones, the big obstacles and the lessons learned? I recently came across an interesting panel discussion addressing these very issues, featuring many of the database pioneers and leaders of the last 30 years:

Chris Date
Herb Edelstein
Bob Epstein (Sybase who shared code with Microsoft for remarketing on SQL Server on OS/2 which inevitably lead to the Microsoft SQL Server we know today)
Ken Jacobs (Oracle's Dr. DBA)
Pat Selinger  (DB2 precursor called System R)
Roger Sippl (Informix)
Michael Stonebraker (Ingres, Postgres, and Mariposa)

The event is available via streaming video and was recorded in February at the Computer History Museum in Mountain View, California. After a chatty and lengthy (45 minutes!) introduction only interesting to hardcore insiders, you can see Chris Date waxing eloquent about Ted Codd (complete with quotes from Shakespeare, no less), Herb Edelstein waxing eloquent about Chris Date, and Michael Stonebraker at his geeky best. There's also interesting trivia about the beginnings of SQL, the role of INGRES, why the relational model will stand the test of time and some friendly Oracle and IBM bashing (and Microsoft and Sybase and...). I urge all you data management pros interested in broadening your knowledge of the field to check it out! If you're still not satiated, don't forget about our collection of backgrounders about the DBMS and the data management industry.
# PermaLink Comments [0]
06/09/2003 05:28 GMT Modified: 06/22/2006 08:56 GMT
         
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