ISO (the International Organization for Standardization) and IEC (the International Electrotechnical Commission) form the specialized system for worldwide standardization. National bodies that are members of ISO or IEC participate in the development of International Standards through technical committees established by the respective organization to deal with particular fields of technical activity. ISO and IEC technical committees collaborate in fields of mutual interest. Other international organizations, governmental and non-governmental, in liaison with ISO and IEC, also take part in the work. In the field of information technology, ISO and IEC have established a joint technical committee, ISO/IEC JTC 1.
International Standards are drafted in accordance with the rules given in the ISO/IEC Directives, Part 3.
ISO/IEC 19757-3 was prepared by Joint Technical Committee ISO/IEC JTC 1, Information Technology, Subcommittee SC 34, Document Description and Processing Languages.
ISO/IEC 19757 consists of the following parts, under the general title Document Schema Definition Languages (DSDL):
— Part 1: Overview
— Part 2: Grammar-based validation — RELAX NG
— Part 3: Rule-based validation — Schematron
— Part 4: Namespace-based validation dispatching language — NVDL
— Part 5: Datatypes
— Part 6: Path-based integrity constraints
— Part 7: Character repertoire description language — CRDL
— Part 8: Document schema renaming language — DSRL
— Part 9: Datatype- and namespace-aware DTDs
— Part 10: Validation management