Jesse Sightler wrote:
I see that the process of generating an RDF view on an existing
SQL-based table structure is generated by a mapping file. Is the
mapping process documented? Ie, how difficult would it be to generate
a mapping by hand based upon custom requirements?
Once you understand how the relations rows morph into data objects, and
now their fields become attributes, and fkeys become relationship
attributes (or associations), you can productively perform one of the
following:
1. Generate initial via Wizard and edit by hand
2. Write the whole mapping by hand or make your own generator
You can make ontologies and inference rules etc.. post 1&2 which
ultimately up the ante re. power of this sort of cross realm mapping
(i.e. RDBMS to RDF-Graph).
Links:
1. http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VOSSQL2RDF
2.
http://virtuoso.openlinksw.com/dataspace/dav/wiki/Main/VirtRdb2RDFViewsGeneration#OneClickLinkedDataGenerationAndDemployment
3.
http://virtuoso.openlinksw.com/Whitepapers/html/rdf_views/virtuoso_rdf_views_example.html
Kingsley
Thanks,
Jess
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Regards,
Kingsley Idehen
President & CEO
OpenLink Software
Web: http://www.openlinksw.com
Weblog: http://www.openlinksw.com/blog/~kidehen
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