[NTG-context] context and sqlite

I've been trying to connect ConTeXt to sqlite for almost a week but I have repeatedly failed. Neither the "internal" variant according to the documentation, nor the attempt on luasql have worked. Above all, the Google request showed me that not alone with this problem - how reassuring. ;-) At the moment, concentrate I am accessing via swiglib and think my problem lies here (from my log file): sql> start loading method 'sqlite' swiglib> unknown: 'swiglib.sqlite.core' swiglib> unknown: 'swiglib.helpers.core' Obviously, the appropriate modules are not found, but where Can I get them and where do they belong? And maybe also someone a working code example for me. I'm working with Texlive 2017 on XUBUNTU 16.04. Best regards Jörg Hofmann