Transaction log files may be preserved and archived for an indefinite time, providing a full, recoverable history of the database.

Integrity constraints include: Virtuoso stores all its information about all user objects in the database in the system catalog tables designated by db.dba*.

Heikki Tuuri (creator of InnoDB), Ora Lassila (W3C and Nokia Research, a technology lead and visionary in the areas RDF and Semantic Web in general alongside Tim Berners-Lee), and Orri Erling (Virtuoso Program Manager at OpenLink Software) all worked together in a startup company called Entity Systems in Finland – where they were developing Common Lisp and Prolog development environments for the early generation of PC's circa.

Later, Orri Erling worked with VIA International, the developer of VIA/DRE in designing a LISP-based object-oriented data access layer atop the company's DBMS product.

The core development team of VIA, following the company's demise in 1992, went on to found Solid Technologies under the direction of Artturi Tarjanne.

Heikki Tuuri worked at Solid for a while before starting his own database development project which became InnoDB (acquired by Oracle in 2005).

[3] Kubl was marketed as a high performance lightweight database for embedded use; the development aim was to achieve top scores in Transactions Per Second tests.

Virtuoso's functionality covers a broad range of traditionally distinct realms in a single product offering.

These functional realms include: Virtuoso supports a broad range of industry standard Web & Internet protocols that includes: HTTP, WebDAV, CalDAV, CardDAV, SOAP, UDDI, WSDL, WS-Policy, WS-Security, WS-ReliableMessaging, WS-Routing, WS-Referral, WS-Attachment, WS-BPEL, SyncML, GData, SPARQL, SPARUL, NNTP For the database application developer and systems integrator, Virtuoso implements a variety of industry standard data access APIs (client and server) that includes: ODBC, JDBC, OLE DB, ADO.NET, ADO.NET Entity Framework, XMLA.

SQL, SPARQL (with numerous extensions), XQuery (implementation of Core functions library is seriously incomplete), XPath (1.0 only), XSLT (1.0 only) SQL's Data Definition Language, XML Schema Virtuoso is a solution for the following system integration challenges: In addition to Virtuoso, OpenLink Software produces several related tools and applications: Virtuoso is supported on a number of 32- and 64-bit platforms including cross-platform Windows, UNIX (HP, AIX, Sun, DEC, BSD, SCO), Linux (Red Hat, SUSE) and macOS.