Other profiles in OWL 2

• OWL 2 retains the duality of OWL 2 DL and OWL 2 Full

• For very large concept hierarchies (but no sophisticated property features): EL++

• Minimal federation vocabulary over a possibly very large set of RDF data: DL-Lite and OWL-R

• • DL-Lite can be implemented with query rewriting on DB systems
  • OWL-R can be implemented with rule engines

• EL++ and DL-Lite are profiles of OWL 2 DL (ie, “inheriting” all its restrictions)