The repository manages artifacts like schemas (e.g. XML Schema or RELAX NG), service descriptions (e.g. WSDL), business process definitions (e.g. BPEL) and policies (e.g. WS-Policy).
RELAX NG | Relax | Relax, Take It Easy | Relax! (no3b song) | Relax! |
For validation purposes, the documents can be validated against DTD, W3C XML Schema, RELAX NG, Schematron, NRL and NVDL schemas.
Two more expressive XML schema languages in widespread use are XML Schema (with a capital S) and RELAX NG.