i have an existing user/role domain model and i would like to integrate to my app the Camunda Engine.
As far as i can see, the Camunda uses its own user management service (ACT_ID_* related tables).
My question is whether is it possible to ignore the default Camunda identity tables, and be able to use the workflow engine with my own identity tables.
For example what if i assign a task to a user that resides in my own user table? Is there any database FK constraint ?