[TYPO3-commerce] CSV-Import from 1 & 1 online-shop-system into Typo3 commerce extension

[Andreas Dahms]

Hallo,
 
I want to Import a csv-File, exported from 1 & 1 online-shop-system. Could
someone describe me which tables have to be used for (product-)categories
and which for articles and how the csv-import-file has to be structured, so
that I get all the categories, articles and relations (
category->[subcategory->]*article ) into Typo3 commerce-extension. 
 
Thanks to all and regards
Andreas Dahms