deleting a node containing many nested nodes... doesn't disconnect relations automatically, right? Should I be worried by "deserted" relation data?

You can specify the deletion behavior by using

@relation

directive: https://www.prisma.io/docs/reference/service-configuration/data-model/data-modelling-(sdl)-eiroozae8u#the-@relation-directive

yes indeed but it says it just sets relation to

null

but it sounds then like the data row declaring the relation is not deleted, leaving unused data... maybe not 🙂

hope this helps, @zonofthor https://www.prisma.io/forum/t/help-with-cascading-deletes/3878/2?u=nilan