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TMQL tutorial, part 7

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This is the seventh part in a series of TMQL tutorials.

Learn with this series of TMQL tutorials how to query Topic Maps with a structured query language. With Maiana you can exercise all examples given in the slides (you have to be logged in to query maps in Maiana). The TMQL4J library allows you to use TMQL in all of your applications and provides you a detailed documentation of all TMQL features.

Part 7 of 8 of the TMQL tutorial introduces and demonstrates the use of conditional expressions as a powerful and useful feature. The modification language of TMQL is also covered.(All slides are in German.)

Go back to part 6 of this TMQL tutorial.

Proceed with part 8 of this TMQL tutorial.

Authors of this document are

Subject Matter


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The tmql4j engine is the first Java-based engine processing the topic maps query language. The engine is designed as processing chain of independent ...

Visit homepage of TMQL4J


is a {{project}}.


Maiana - Yet another generic topic maps browser? Yes, but it's social :) *What it is?* Maiana is the most efficient service to host, explore and ...

Visit homepage of Maiana



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TMQL is the abbreviation for Topic Maps Query Language.


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Topic Maps is the only formal semantic model which is optimized for humans, not for computers. Applications and web portals based on Topic Maps are easy to use, without limitations for flexibility and creativity.

Benjamin Bock
Ruby Topic Maps
Topic Maps Lab auf der Cebit 2011

Graduate from the Topic Maps Lab