virtuoso-opensource 6.1.0-0ubuntu4 (i386 binary) in ubuntu maverick

 Virtuoso is a high-performance object-relational SQL database. As a
 database, it provides transactions, a smart SQL compiler, powerful
 stored-procedure language with optional Java and .Net server-side
 hosting, hot backup, SQL-99 support and more. It has all major
 data-access interfaces, such as ODBC, JDBC, ADO .Net and OLE/DB.
 .
 OpenLink Virtuoso supports SPARQL embedded into SQL for querying RDF
 data stored in Virtuoso's database. SPARQL benefits from low-level
 support in the engine itself, such as SPARQL-aware type-casting rules
 and a dedicated IRI data type.
 .
 This is the Virtuoso's Open-Source Edition (Virtuoso OSE).