[NTG-context] Documentation for the database module

Hi, I want to typeset a Periodic Table of the Elements. The according data is prepared in a file with comma separated values (csv/UNIX). I found some *very* basic informations how to get file based csv-data typeset, but the result is hardly recognizable as Periodic Table of the Elements. To understand how to use the according commands I need a documentation of it. What I found was this: https://wiki.contextgarden.net/M-database which is more a summary of two examples with no explanations and starting with the warning "This may be outdated". Where can I find a good one? Thanks a lot for any help in advance! Cheers! mcc