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Topic Map Constraint Language (TMCL). Requirements und Use Cases (2003)

Technical Report, was published by Mary Nishikawa at 2003-10-31

This document outlines the general requirements of TMCL.

External Link: more information

TMCL will provide a means to express constraints on classes of topic maps conforming to the Data Model for ISO/IEC 13250:2002 Topic Maps. Its goal will be to provide a language such that a topic map can be said to be conforming to set of constraints. A topic map can be said to conform if it is successfully validated against the set of constraints. It may help optimization both of topic map storage and of TMQL queries based on schema information. It may aid applications in providing more intuitive user interfaces for creating and maintaining topic maps.

This document, split into three core sections, outlines the general requirements that the language should meet, provides technical use cases (these are data structure level use cases), and provides use cases that cater to the wider deployment of TMCL (such as illustrating how TMCL could be used in a document management solution to provide metadata authoring rigor).


Mary Nishikawa

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TMCL is the abbreviation for Topic Maps Constraint Language.


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As a former information scientist, I am fascinated since 1999 by the capabilities for building Topic Maps-based knowledge systems having the potential to augment human mind. One can model arbitrary knowledge organization systems, deal with semantic heterogeneity, collocate all facts about one subject in one logical place, and with TMQL have semantic retrieval on federated semantic networks. Therefore I expect bright prospects for business concepts building on the exchange of such knowledge snippets via semantic knowledge services.

Alexander Sigel
Topic Maps Lab auf der Cebit 2011

Graduate from the Topic Maps Lab