virtuoso-opensource - 6.1.6+dfsg2-4 main

OpenLink Virtuoso is a high-performance object-relational SQL database.
It provides transactions, a smart SQL compiler, hot backup, SQL:1999
support, a powerful stored-procedure language supporting server-side
Java or .NET, and more. It supports all major data-access interfaces,
including ODBC, JDBC, ADO.NET, and OLE/DB.
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Virtuoso supports SPARQL embedded into SQL for querying RDF data stored
in its database. SPARQL benefits from low-level support in the engine
itself, such as SPARQL-aware type-casting rules and a dedicated IRI data
type.
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Install this metapackage for the full suite of packages that make up
Virtuoso OSE ("Open-Source Edition").