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a Strix is a kind of small Owl

StrixDB tools development is motivated by the lack of simple tools to manipulate middle sized RDF graphs. StrixDB is appropriate if you use RDF for interoperability, for graph manipulation, for reasoning, for data driven applications. 

StrixDB provides simple solutions to use RDF without pain  (see Getting Started) :

  • StrixStore : a RDF graph store allowing transactions and rule inference (DOC)
  • VGR (Visual Graph Requestor) another graphical tool to explore RDF graphs.
  • some tools (Lua modules) to parse RDF/XML and download files from internet

Simple because you don't need to bundle together an RDF store, a SQL database, a prolog or a RuleML engine, an Apache server, a Turtle converter and some others tools.

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StrixStore

StrixStore uses a native disk-based triplet storage enabling performances and transactions.

  • support SPARQL 1.0, SPARQL/Update and SPARQL/protocol
  • Datalog rules reasoning integrated in SPARQL.
    • allows recursion inference/matching in SPARQL,
    • negation and negation in recursion (well-founded semantics).
  • build-in Turtle Reader and Turtle Writer,
  • database management through  Lua  API.
  • easy to use and deploy : could be used standalone or as server :
    • with httpd (Apache Web Server) server to :
      • download and upload RDF graphs into the RDF store (in XML or turtle format)
      • make SPARQL and SPARQL/Update HTTP requests (with the SPARQL protocol),
      • respond to HTTP requests with dynamic Lua pages
        • created from Lua scripts or
        • created from files with Lua code (similar to php pages).
    • standalone as a Lua module (embedded use).
    • standalone as a standard dynamic library (embedded use from C/C++/Java/etc...).
  • graph comparison functions handling RDF blank nodes matching.

ALL FEATURES WITH SIMPLE API

News

2011-06-03 Version 1.0 (see ChangeLog) : Datalog inference (well-founded semantics) now fully supported.
2011-05-26 Bug release 0.94.6 of RDF store (see ChangeLog)
2011-04-13 Bug release 0.94.5 of RDF store (see ChangeLog)
2011-03-31

First release of VGR (Visual Graph Requestor) a Graphical Interface for SPARQL requests (with energy layout, orthogonal layout and 3D layout). (docs and tutorial coming soon)

RDF store Release 0.94.4: Bug release (see ChangeLog)

2011-03-23 Release 0.94.3: Bug release of RDF store
2011-02-27 Release 0.94 : 64bits upgrade. Delayed commit + backup available.
2011-01-10 Release 0.93 : now SPARQL protocol use content negotiation.
2010-12-16 Bug fix release 0.92.3 : XML/RDF parsing error corrected (now could load OWL files).
2010-11-23 Release 0.92.2 : Bug release of RDF store
2010-11-22 Bug fix release 0.92.1 : Bug release of RDF store
2010-11-06 RDF store release 0.92 : StrixDB could be used with APACHE http server. See Getting Started with StrixDB
StrixServer no more maintained. StrixDB RDF store documentation updated.
2010-09-02 RDF store release 0.91: improved XML/RDF and RFC 2396 compliance (see more at compliance).
W3C approved test cases (http://www.w3.org/TR/rdf-testcases/) are all successful parsed.
2010-07-24 First specification of grdfs Graphical RDFS ontology.
Now, SPARQL/update LOAD could also use https
new helper function (dirent) added to webGet
2010-07-23 webGet tool could now use https protocol.
2010-07-21 First performances evaluations.
2010-07-20 Documentation/web site major updates.
2010-07-14 Release of StrixDB RDF store version 0.9 and documentation of Lua module webGet.