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tolog for TMQL

Paper, was published by Lars Marius Garshol at 2003-08-04

This paper examines extensions and means for tolog an a standard query language derived from tolog.

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Do you really need to find something in Topic Maps, not just browse them? Perhaps you want to edit Topic Maps, and your tool needs to select particular structures? In either case, you need a query language to manipulate the structure and content of Topic Maps. The ISO project for a standard Topic Map Query Language (TMQL) has begun with examination of existing languages. Among the languages designed for operations on Topic Maps is tolog, whose design was influenced by Datalog, a language for querying deductive databases, derived from Prolog. Extensions to tolog and means for creating the standard language from it and other efforts will be examined.


Lars Marius Garshol

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Lars Marius is project leader of TM Photo, Topic Maps Tools, and duke - fast deduplication.. .



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TMQL is the abbreviation for Topic Maps Query Language.


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Topic Maps is an excellent paradigm to support human thinking and to visualize networked information. As part of my PhD project, I therefore chose Topic Maps as the conceptual foundation for designing and implementing a software prototype for semantic knowledge retrieval.

Stefan Smolnik
Topic Maps Lab auf der Cebit 2011

Graduate from the Topic Maps Lab