ISSUE-25: Should we deprecate (RDF 2004) reification of statements?

Deprecate Reification

Should we deprecate (RDF 2004) reification of statements?

State:
CLOSED
Product:
Cleanup tasks
Raised by:
Sandro Hawke
Opened on:
2011-04-07
Description:
The RDF 1999 and 2004 Recommendations include vocabulary and syntax
(in RDF/XML) for RDF "reification" of RDF statements themselves. The
vocabulary is rdf:Statement, rdf:subject, rdf:predicate, and
rdf:object; the syntax is rdf:ID used on a property element.

Although this feature is sometimes used in practice, some experts
advise data providers to avoid it. It has no syntactic support in
RDFa or Turtle. Should the WG align with this advice and say this
feature is only to be use for backward compatibility? (That is,
RDF/XML parsers must continue to support the syntax, and libraries
should allow applications to use the features to interoperate with
legacy RDF systems.)

Note that many or all of the use cases of reification are also uses
cases for [GRAPHS]. The decision about the fate of reificiation is
connected with what happens with [GRAPHS].

http://www.w3.org/TR/2004/REC-rdf-primer-20040210/#reification
http://www.w3.org/2001/sw/wiki/RDF_Core_Work_Items#Data_Model_Issues
Related Actions Items:
No related actions
Related emails:
  1. Re: Turtle data-type (from kidehen@openlinksw.com on 2013-05-29)
  2. Re: Turtle data-type (from sandro@w3.org on 2013-05-29)
  3. Minutes for 23 January 2013 (with an after-the-fact fix) (from richard@cyganiak.de on 2013-01-23)
  4. ISSUE-25 Talis Position (from ian.davis@talis.com on 2011-10-13)
  5. RDF-ISSUE-45 (revisit-rdfms-quoting): Revisit 'The syntax needs a more convenient way to express the reification of a statement' [Cleanup tasks] (from sysbot+tracker@w3.org on 2011-05-03)
  6. Re: first draft on ISSUE-25 (Deprecate Reification) (from danbri@danbri.org on 2011-04-15)
  7. Re: first draft on ISSUE-25 (Deprecate Reification) (from richard@cyganiak.de on 2011-04-15)
  8. Re: first draft on ISSUE-25 (Deprecate Reification) (from phayes@ihmc.us on 2011-04-12)
  9. first draft on ISSUE-25 (Deprecate Reification) (from sandro@w3.org on 2011-04-12)
  10. Re: RDF-ISSUE-25 (Deprecate Reification) (from phayes@ihmc.us on 2011-04-11)
  11. [GRAPHS] Re: RDF-ISSUE-25 (Deprecate Reification) (from sandro@w3.org on 2011-04-11)
  12. Re: RDF-ISSUE-25 (Deprecate Reification) (from sandro@w3.org on 2011-04-11)
  13. Re: RDF-ISSUE-25 (Deprecate Reification) (from phayes@ihmc.us on 2011-04-11)
  14. Re: RDF-ISSUE-25 (Deprecate Reification) (from phayes@ihmc.us on 2011-04-11)
  15. Re: RDF-ISSUE-25 (Deprecate Reification) (from sandro@w3.org on 2011-04-11)
  16. Re: RDF-ISSUE-25 (Deprecate Reification) (from sandro@w3.org on 2011-04-11)
  17. Re: RDF-ISSUE-25 (Deprecate Reification) (from phayes@ihmc.us on 2011-04-11)
  18. Re: RDF-ISSUE-25 (Deprecate Reification) (from phayes@ihmc.us on 2011-04-11)
  19. Re: RDF-ISSUE-25 (Deprecate Reification) (from richard@cyganiak.de on 2011-04-11)
  20. Re: RDF-ISSUE-25 (Deprecate Reification) (from danbri@danbri.org on 2011-04-11)
  21. Re: RDF-ISSUE-25 (Deprecate Reification) (from sandro@w3.org on 2011-04-11)
  22. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from danbri@danbri.org on 2011-04-10)
  23. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from richard@cyganiak.de on 2011-04-10)
  24. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from dieter.fensel@ontotext.com on 2011-04-09)
  25. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from phayes@ihmc.us on 2011-04-09)
  26. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from ww@styx.org on 2011-04-09)
  27. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from sandro@w3.org on 2011-04-09)
  28. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from richard@cyganiak.de on 2011-04-09)
  29. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from ivan@w3.org on 2011-04-09)
  30. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from ww@styx.org on 2011-04-09)
  31. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from ivan@w3.org on 2011-04-09)
  32. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from ww@styx.org on 2011-04-09)
  33. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from nathan@webr3.org on 2011-04-09)
  34. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from sandro@w3.org on 2011-04-08)
  35. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from richard@cyganiak.de on 2011-04-08)
  36. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from sandro@w3.org on 2011-04-08)
  37. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from richard@cyganiak.de on 2011-04-08)
  38. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from richard@cyganiak.de on 2011-04-08)
  39. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from dieter.fensel@ontotext.com on 2011-04-08)
  40. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from sandro@w3.org on 2011-04-08)
  41. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from ivan@w3.org on 2011-04-08)
  42. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from sandro@w3.org on 2011-04-07)
  43. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from eric@w3.org on 2011-04-07)
  44. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from sandro@w3.org on 2011-04-07)
  45. Re: RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from dpw@talis.com on 2011-04-07)
  46. RDF-ISSUE-26 (Deprecate rdf:ID on nodes): Should we deprecate rdf:ID on RDF/XML node elements? (use rdf:about instead) [Cleanup tasks] (from sysbot+tracker@w3.org on 2011-04-07)
  47. RDF-ISSUE-25 (Deprecate Reification): Should we deprecate (RDF 2004) reification? [Cleanup tasks] (from sysbot+tracker@w3.org on 2011-04-07)

Related notes:

RESOLVED to close ISSUE-25 by saying that this WG will not deprecate reification of statements. We will note informatively in the RDF Schema spec that named graphs and RDF datasets are another mechanism to accomplish the same goals. link

See: http://www.w3.org/2011/rdf-wg/meeting/2013-01-23#resolution_1

Guus Schreiber, 30 Jan 2013, 17:16:54

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Guus Schreiber <guus.schreiber@vu.nl>, Chair, Ivan Herman <ivan@w3.org>, Sandro Hawke <sandro@w3.org>, Staff Contacts
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