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W3C XML Schema Definition Language (XSD)

Structural and datatype schema language for XML documents.

Identity and normative owner

Record: xsd; record authority: Modeling. Normative owner of subject: World Wide Web Consortium (W3C). Resource reference: https://www.w3.org/TR/xmlschema11-1/ Registration is for discovery, not adoption, endorsement, or transfer of normative ownership.

Editions

  • 1.1: W3C Recommendation (named 2012 publication). Named edition for identification, not a claim that it is the newest edition.

Distributions and references

  • xsd-documentation — documentation, text/html, en. Rights are assessed per distribution in the record. Unassessed rights do not imply permission to redistribute.

Verification scope

  • metadata-observed (2026-09-17): Primary-source page metadata observed; no distribution bytes, legal clearance, current-latest guarantee, or implementation conformance was verified.

Cautions

  • Record the applicable XSD language version and referenced schema closure. Structural validity is not automatically full application conformance.