How to store JSON in a database without attracting DBA's attention

Sooner or later every developer has to store something in the database that is inconvenient to store there. For these tasks there are known elaborate and inconvenient ways to solve them, which in addition can easily lead to performance problems.

An alternative to all this is storing such data as JSON. But relational DBMSs don't like JSON. The speakers will talk about the problems associated with this, talk about how they can be solved without leaving the relational structure, and demonstrate what's wrong with these solutions.