DefiningImageAccess/Tool/Virtuoso

From ImageWeb

{{#ifeq:Virtuoso|||| colspan="2" style="text-align: center; background: #CAF7B7"|}}

{{#ifeq:virtuoso.openlinksw.com/||||style="vertical-align: top;" |Link

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DefiningImageAccess/Tool/Virtuoso
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Status:=Active}}
JISCTool:=False}}
Focus:=Metadata creation and web portal}}
[[Publishes::{{{Publishes}}}]]}}
[[Uses::{{{Uses}}}]]}}
[[RelatedTo::{{{RelatedTo}}}]]}}
[[Partner::{{{Partner}}}]]}}
[[Contact::{{{Contact}}}]]}}

Defining Image Access

DefiningImageAccess/RelatedWork

Virtuoso

• http://virtuoso.openlinksw.com/
• http://virtuoso.openlinksw.com/overview/index.htm - Virtuoso Universal Server
• http://virtuoso.openlinksw.com/wiki/main/Main/OdsIndex - OpenLink data spaces

See also:

• DefiningImageAccess/Project/ODS

The software described here appears to have many attributes of our vision for data webs. It bears a closer look, but the full system is an expensive commercial offering. There is an open source version, which might serve out purposes, but further study will be needed.

Observations

• Please see the document about Virtuoso's Sparql Query service at http://docs.openlinksw.com/virtuoso/rdfsparqlprotocolendpoint.html.

• Summary: OpenLink Virtuoso supports SPARQL queries and allows SPARQL to be embedded in SQL, for querying RDF data stored in Virtuoso's Object-Relational Database. "Any SQL client can issue SPARQL queries against Virtuoso through the regular SQL client API, ODBC, JDBC, or other". This achieves a similar goal as the D2R Server. But Virtuoso does not require users to pre-configure the mapping between the relational schema to an RDFS schema using the D2RQ language.

"In Virtuoso, SPARQL benefits from low-level support in the core engine via features such as: SPARQL aware type casting rules and a dedicated IRI data type. The Virtuoso RDF Triple Store is the fastest developing functionality realm of Virtuoso at the current time. Virtuoso Open Source (license: GPL) and Commercial Editions (version 4.5.2) are now Available." --- [1]

The Virtuoso Sparql query service supports Sparql queries for both local data and remote sparql endpoints.