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Aligning the German 3A standard with INSPIRE Annex I

Thorsten Reitz and Markus Seifert

(Submission #303)


Over the course of the last 15 years, Germany has developed its own set of GML-based spatial data exchange standards, known as ALKIS-AFIS-ATKIS (or short 3A NAS). Surveying organisations in all states have implemented the standards, thus providing a common foundation for an INSPIRE implementation.

In 2016, the Arbeitsgemeisnchaft deutscher Vermessungsverwaltungen (AdV) commissioned wetransform to create a formal data transformation specification, with 3A NAS as a source and with 14 INSPIRE Annex I GML schemas as the target. The baseline for the project was a massive collection of Excel matching tables. This project has recently been completed and has resulted in the first full, formal and executable data transformation specification. The results of the project helped German authorities to achieve the breakthrough in the provision of unified INSPIRE data sets.

A special challenge of this project was the high complexity of the source data models, which are much larger than the individual INSPIRE annex data specifications. Furthermore, the 3A NAS schemas use a lot of special constructs to link features, and the German states have implemented lots of individual variants due to different processes and legal requirements.

In this talk, we will explain how we created these highly complex alignments with up to 450 cells using tools like Gitlab, hale studio and Gradle, what methodologies we applied, and how implementers such as the state of Rheinland-Pfalz have already picked up the results to create INSPIRE compliant data sets from their 3A NAS production databases.


Topic Area:  [3.3] Alignment with national, EU and international policies/initiatives
Abstract Type:  Oral Presentation

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