I think of two broad categories of database records: transactional data (data created while running the system) and domain data (data created during development

I think of two broad categories of database records: transactional data (data created while running the system) and domain data (data created during development and shipped to production as part of the release process). The former type of data I wouldn't expect to ever be open-sourced. The latter type might or might not be, depending on the intent of open-sourcing the related system. If I created a human language translation system that used a SQL database to store the dictionary (domain) data and claimed the system was open-source without shipping the domain data, I think people would rightly say that the system was not fully opened.