Law and data protection
BDSG
Abbreviation for Bundesdatenschutzgesetz
In short and in plain language
The BDSG is a German law on data protection.
It adds to the data protection rules that apply across Europe.
It deals, for example, with deleting data.
What applies in your case is a matter for legal advice.
Definition
The BDSG is the German Federal Data Protection Act. It supplements the GDPR where the GDPR allows member states their own rules, for example on erasure and on restricting processing. What applies in an individual case is a matter for legal advice.