- From: Michael Hausenblas <michael.hausenblas@deri.org>
- Date: Tue, 17 May 2011 19:13:14 +0100
- To: phayes@ihmc.us
- Cc: W3C RDB2RDF <public-rdb2rdf-wg@w3.org>
Pat, In today's telecon we had a discussion regarding ISSUE-41 [1] and would appreciate a short advise from your side concerning the following question: [[ Is a blank node an accurate representation of a NULL value from a relational database? ]] Note that this relates to the Direct Mapping (in R2RML one can overwrite the behaviour). We have identified options for dealing with the situation (producing no triple or introducing a bNode representing the NULL value) and would like to hear your opinion on the matter. Tracker, this is my ACTION-131. Cheers, Michael [1] http://www.w3.org/2001/sw/rdb2rdf/track/issues/41 -- Dr. Michael Hausenblas, Research Fellow LiDRC - Linked Data Research Centre DERI - Digital Enterprise Research Institute NUIG - National University of Ireland, Galway Ireland, Europe Tel. +353 91 495730 http://linkeddata.deri.ie/ http://sw-app.org/about.html
Received on Tuesday, 17 May 2011 18:13:43 UTC