Hi ????, On 31 Mar 2014, at 10:07, ???? <1124250...@qq.com> wrote: > First,my english is not good
You??re doing fine! > I have a problem > I want to make all od the tables in the two database mapped to a mapping > file(ttl file). D2RQ can only connect to one single database. If your data is in multiple different databases, you have a number of options: 1. You can export them all to RDF using dump-rdf, and then load all of the data into a single RDF store such as Virtuoso, Fuseki, etc. 2. You can set up two separate instances of D2R Server, one for each database, and then use a SPARQL federation engine to connect to the SPARQL endpoints of both D2R Server instances. See here for a recent comparison of SPARQL federation engines: http://www.semantic-web-journal.net/system/files/swj625.pdf http://svn.aksw.org/papers/2014/HiBISCuS_ESWC/public.pdf Best, Richard > but I could find the method > > generate-mapping [-u user] [-p password] [-d driver] > > > [-l script.sql] [--[skip-](schemas|tables|columns) list] > > > [--w3c] [-v] [-b baseURI] [-o outfile.ttl] > > > [--verbose] [--debug] > > > jdbcURL > I could create a tll file with the above way,but it is usful to only one > database > I hope to solve this problem,thank you ! > ------------------------------------------------------------------------------ > _______________________________________________ > d2rq-map-devel mailing list > d2rq-map-devel@lists.sourceforge.net > https://lists.sourceforge.net/lists/listinfo/d2rq-map-devel ------------------------------------------------------------------------------ _______________________________________________ d2rq-map-devel mailing list d2rq-map-devel@lists.sourceforge.net https://lists.sourceforge.net/lists/listinfo/d2rq-map-devel
