Extended support for relationship types

[zan73]

Currently dbdocs only supports one to many as an optional one to mandatory many.
Can the dbml specification be enhanced to support more granular types such as mandatory 1 to optional many, etc as per the different ends of the following image:

[TeaNguyen]

Thank you for raising this!

Indeed, we only support optional cardinality for the parent entity side at the moment based on FK nullability. We’ll consider letting users annotate the optional on the opposite side in the future.