Full Features Support of SPARQL

[harshakhmk]

I was wondering if Virtuoso has support of additional SPARQL features which are Converting Graph Patterns, Basic Graph Pattern Matching, Evaluation Semantics, SPARQL Algebra, apart from insert, update, delete and inferencing?

[kidehen]

Beyond Insert, Update, Delete, and Inference, Virtuoso also provides an ability to dereference variables (if associated with HTTP IRI-based denotation) as part of the query solution production pipeline.

Virtuoso also incorporates attribute-based access controls to its solution production pipelines that transparently integrate with a variety of authentication protocols.

[harshakhmk]

Could you tell more on support for above features related to Graph patterns and SPARQL Algebra, property paths, regular expression, and SPARQL 1.1 query/update? In general, what features of SPARQL 1.1 are not supported/implemented in Virtuoso?

Here is a list of SPARQL 1.1 test results: https://w3c.github.io/rdf-tests/sparql11/reports/. Are there any such results for Virtuoso?

Any information regarding would be very helpful.