XSD (XML Schema Definition), a recommendation of the World Wide Web Consortium (W3C), specifies how to formally describe the elements in an Extensible...

changing the XML info set), while W3C XML Schema does. Again, this design is intentional and is to separate validation and augmentation. W3C XML Schema has a...

Framework (RDF) Schemas". W3C. W3C Working Draft. RDF Schema Working Group. Retrieved 2021-04-23. "RDF Schema 1.1 Publication History - W3C". W3C. n.d. Retrieved...

newer XML namespace-aware schema languages (such as W3C XML Schema and ISO RELAX NG) have largely superseded DTDs as a better way to validate XML structure...

LAnguage for XML Next Generation) is a schema language for XML—a RELAX NG schema specifies a pattern for the structure and content of an XML document. A...

schema language, described by the W3C as the successor of DTDs, is XML Schema, often referred to by the initialism for XML Schema instances, XSD (XML...

in other W3C specifications such as XML Schema, XForms and the Internationalization Tag Set (ITS). XPath has been adopted by a number of XML processing...

MusicXML is an XML-based file format for representing Western musical notation. The format is open, fully documented, and can be freely used under the W3C...

XML Information Set (XML Infoset) is a W3C specification describing an abstract data model of an XML document in terms of a set of information items. The...

Schema Validator Validate XML files against an XML Schema. "Well-Formed XML Documents". Extensible Markup Language (XML) 1.1. W3C. 2004. "Constraints and...