My take on it:
If there are entities you need to define relations on, you can still use ER Diagrams for the sake of documentation.
The choice of using a non-relational might be an implementation detail,then.
Question
As we know ERD diagram is very useful for relational databases. Which Diagram is relevant for Non relational database ? can ERD be also used?
Solution
My take on it:
If there are entities you need to define relations on, you can still use ER Diagrams for the sake of documentation.
The choice of using a non-relational might be an implementation detail,then.
OTHER TIPS
Use Case, Class, Structure, Collaboration, Sequence etc. Currently using all of those diagrams for my Java games development project. Hope that helped! Good luck