How does gramps resolve conflicting types?

[pfziom]

I have a use-case which I am not sure can be fulfilled by gramps. Any advice is greatly appreciated.

I am migrating a legacy multi-tenant system application built on Postgres where the databases of all tenants are not exactly the same but very much similar. I was planning to use postgraphile to create a GraphQL API for it and then use gramps to merge them all.

On my frontend, I want to use the master API to query data such that when a user from TenantA logins, the master API will serve data from TenantA's API. Similarly for TenantB.

Is it possible with gramps? If not, any advice on how to achieve this?