Virtuoso Universal Server Changelog

What's new in Virtuoso Universal Server 7.2

• Core Database Engine:
• Loosely-coupled SSL/TLS -- SSL/TLS version and associated cipher selection is now configurable. Net effect, you can now explicitly disable the use of specific SSL/TLS versions (e.g., SSL/TLS 3.0, which is susceptible to the POODLE exploit).
• Mounting and Umounting 3rd Party Storage Services to WebDAV -- 3rd Party Storage Services (e.g., Dropbox, Amazon S3, Microsoft OneDrive, Google Drive, Box, Rackspace, etc.) are mountable and un-mountable using an asynchronous operation (in prior releases, this was a synchronous operation). Once mounted, these 3rd party folders function like any other WebDAV resource. This kind of WebDAV collection (a "Dynamic Extension Resource Type" or "DET" for short) can also be designated as an LDP Container, making Virtuoso WebDAV a powerful LDP proxy mechanism for storage services that do not currently support LDP.
• Virtual Database:
• Load Service Data ROLE -- Adds SPARQL endpoint deduction capability to SPARQL-FED. Usage requires granting a new ROLE to SPARQL user account. Once granted, Virtuoso makes a best-attempt to determine the capabilities of a SPARQL endpoint by looking up its SPARQL Service Description Document, if available, and/or executing a series of SPARQL test queries (e.g., testing whether SPARQL Query results may be returned in all formats outlined by the W3C SPARQL spec).
• Filesystem Hosted Virtual Tables -- Enables Virtuoso instances to attach to CSV documents hosted by the File System. Once attached, VIEWs of these documents can be represented as SQL Relational Tables (by default) and/or RDF Property/Predicate graphs (via RDF Views functionality). This includes enhanced support for composite and compound primary keys which can be generated manually (as part of declaration) or automcatically based on document content analysis.
• Linked Data Deployment:
• Improved LDP Support -- Linked Data Platform protocol support has been enhanced, as an extension to existing WebDAV protocol support. You can now designate specific WebDAV folders as LDP Containers, and once this designation has been made, LDP-aware user agents will be able to deductively interact with WebDAV Folders and the documents they contain, using entity relations embedded in both header and body of HTTP responses.
• In-built Nanotation Processor -- Enables automatic transformation of TURTLE statements embedded in Email Messages, Online Discussion Posts, Tweets, Social Media Posts (Facebook, LinkedIn, Google+), HTML Body, and Plain Text documents into RDF-based Linked Open Data, which is then stored in the host Virtuoso instance. You now have the freedom, power, and flexibility to create data wherever and whenever -- as long as the target destination in a content input control that supports plain/text.
• Loosely-Coupled Sponger Middleware Services -- Built-in RDF document transformation middleware is now loosely-coupled to its host Virtuoso database server instance. As a result, you can now use the POST method to request asynchronous data transformation services from a Sponger instance, with the transformed data returned as part of an HTTP response payload.
• SPARQL:
• Geo-Spatial SPARQL Extensions -- Enhanced Geo-Spatial extensions to SPARQL enable high-performance and scalable query of data constructed using spatially-oriented relations. New supported geometric datatypes include polygons, polygons with holes, multi-polygons, geometric collections, multi-points, line strings, multi-line strings, and various geometric functions.
• SPARQL Query Processing Parallelism Enhancements -- 10x throughput gain for multi-user applications and services that utilize complex lookup queries in SPARQL query patterns.