Hi,
In the user manual of D2RQ platform v0.7, it is claimed that “It rewrites
Jena or Sesame API calls, find() and SPARQL queries to
application-data-model specific SQL queries”,
but in the “Using SPARQL” sample, it says that “The SPARQL queries are
processed by Jena's ARQ query engine”. It is executed on the D2RQ model,
which will load all the data in the relational database and transform to a
in-memory RDF graph. So, based on my understanding, the SPARQL query is not
answered by rewriting to SQL executed by relational database.
Could someone give me some hints on the SPARQL-2-SQL rewriting in the D2RQ
V0.7, such as the package name in the source codes of D2RQ v0.7
distributive?
Thanks very much!
Shengping Liu
Shanda Invovations,
Shanghai Shanda Networking Co., Ltd. China.
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