Topic Maps Constraint Language (ISO 19756)

The Topic Maps Constraint Language (TMCL) is a language for defining schemas and constraints on topic map models. Specifically, TMCL can be used to constrain instances of Topic Maps Data Model. The constraint language provides a constraint model, related validation semantics, and CTM syntax templates for authoring constraints.

Current Draft

The current TMCL draft represents the latest work in progress. The TMCL meta-schema and the template definitions can be downloaded separately.

Previous Versions

• Editor's draft from 2010-03-25
• Editor's draft from 2009-10-19
• Editor's draft from 2009-07-15
• Editor's draft from 2009-06-16
• 1053, TMCL ISO/IEC FCD 19756 from 2008-08-07

Meeting Notes

Related links

• A TMCL tutorial.
• TMCL requirements and Use Cases (2004 Oct 16)
• Previous TMCL requirements document (2003 Oct 31). This lays out some initial ideas on what the nature of TMCL should or could address.
• The TMCL discussion group. This is where all aspects of TMCL are discussed and debated.
• The guide to the topic maps standards, which explains what is currently happening with the topic map standards. This should help you understand what TMCL is and its relation to other standards.
• ISO 13250-2: Topic Maps : Data Model (TMDM).
• ISO 13250-6: Topic Maps : Compact Syntax (CTM) .

If you have comments or questions related to these specifications, but are not involved in the ISO process, you can send them to: Graham Moore, Lars Marius Garshol