OpenLink Software, Inc., a provider of universal data access and enterprise information integration middleware, has announced the commercial release of Virtuoso 3.0--the latest edition of its cross platform Virtual Database for SQL, XML, and Web Services. The new release enables transparent and concurrent access in real-time to heterogeneous data sources that include ODBC/JDBC/OLE DB/.NET-accessible databases, XML documents, and data-set oriented Web Services. Virtuoso provides access to heterogeneous data sources through data access interfaces such as XML, XQuery, XPath, SQL, ODBC, JDBC, OLE DB, and ADO.NET. It also integrates runtime environments for distributed computing such as Microsoft .NET, Mono, and J2EE, enabling the creation and hosting of WSDL-compliant XML Web Services, Stored Procedures, Functions, Triggers, and User Defined Types written in Java or any .NET bound language. Virtuoso 3.0 is now commercially available for the following platforms: Windows, Mac OS X, Linux, and UNIX. Virtuoso 3.0 is now available for download from OpenLink's Web site at www.openlinksw.com/virtuoso. You can also view live features demonstrations via an online virtual database instance at http://demo.openlinksw.com:8890/tutorial.