This part of ISO/IEC 19757 specifies Schematron, a schema language for XML. This part of ISO/IEC 19757 establishes requirements for Schematron schemas and specifies when an XML document matches the patterns specified by a Schematron schema.
ISO/IEC 19757-3:2006 history
2020ISO/IEC 19757-3:2020 Information technology — Document Schema Definition Languages (DSDL) — Part 3: Rule-based validation using Schematron
2016ISO/IEC 19757-3:2016 Information technology - Document Schema Definition Languages (DSDL) - Part 3: Rule-based validation - Schematron
2006ISO/IEC 19757-3:2006 Information technology - Document Schema Definition Languages (DSDL) - Part 3: Rule-based validation - Schematron