I am developing multi-tenancy application and I have no problem with the architecture itself. I find difficult on how to make customers table shareable among tenants. This is because same customer can subscribe to multiple tenants. I don't want to have same duplicate data and so user should register only once and be able to subscribe to any of tenant with the same credentials.
I have tried to look over the internet but could not find any good resource (may be I am using wrong keywords). I would appreciate any help (including the architecture name if any) to solve this problem.
If I am not clear please let me know.