Virtuoso Universal Server

OpenLink VirtuosoVirtuosoOpenLink Virtuoso (Open Source Edition)OpenLink Virtuoso Universal ServerVirtuoso triple store
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.wikipedia
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XPath

XPath 1.0 XPath axesquerying (XPath)
SQL, SPARQL (with numerous extensions), XQuery (implementation of Core functions library is seriously incomplete), XPath (1.0 only), XSLT (1.0 only)
* OpenLink Virtuoso

SPARQL

RDF Data AccessSPARQL endpointSPARQL Query Results JSON Format
SQL, SPARQL (with numerous extensions), XQuery (implementation of Core functions library is seriously incomplete), XPath (1.0 only), XSLT (1.0 only) 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

SPARUL

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

Open Semantic Framework

Documents are indexed by the Solr engine for full-text search, while information about their structural characteristics and metadata are stored in an RDF triplestore database provided by OpenLink's Virtuoso software.

Middleware

integration brokermiddleware componentsmiddleware tools
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

Database engine

storage enginestorage engines
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

Relational database

relational database management systemRDBMSrelational databases
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

Object-relational database

object-relationalobject-relational database management systemobject extensions
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

Federated database system

federated databasedata federationDatabase federation
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

Resource Description Framework

RDFResource Description Framework (RDF)RDF feed
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

XML

Extensible Markup LanguageXML documentXML parser
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

Full-text search

full text searchfull textfull-text
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

Application server

web application serverserverJava application server
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

File server

network drivefilefileserver
Virtuoso Universal Server is a middleware and database engine hybrid that combines the functionality of a traditional Relational database management system (RDBMS), Object-relational database (ORDBMS), virtual database, RDF, XML, free-text, web application server and file server functionality in a single system.

Thread (computing)

threadthreadsmultithreading
Rather than have dedicated servers for each of the aforementioned functionality realms, Virtuoso is a "universal server"; it enables a single multithreaded server process that implements multiple protocols.

Process (computing)

processprocessesprocessing
Rather than have dedicated servers for each of the aforementioned functionality realms, Virtuoso is a "universal server"; it enables a single multithreaded server process that implements multiple protocols.

Free and open-source software

free and open-sourcefree and open source softwareFOSS
The free and open source edition of Virtuoso Universal Server is also known as OpenLink Virtuoso.

Software architect

Chief Software ArchitectChief Architectsoftware architects
The software has been developed by OpenLink Software with Kingsley Uyi Idehen and Orri Erling as the chief software architects.

Record linkage

Identity resolutionentity resolutionobject identification/entity resolution/record linkage
Virtuoso provides an extended object-relational model, which combines the flexibility of relational access with inheritance, run time data typing, late binding, and identity-based access.

Hypertext Transfer Protocol

HTTPHTTP requestGET
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 There is one main process, which has listeners on a specified port for HTTP, SOAP, and other protocols.

SOAP

Simple Object Access ProtocolSOAP (protocol)SOAP (Simple Object Access Protocol)
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 There is one main process, which has listeners on a specified port for HTTP, SOAP, and other protocols.