I'm hoping someone may have suggestions on some Java based ROOM resources when managing multiple RDBs (relational) which contain multiple tables. I have done some googling and read some resources and performed some tutorials and projects on the simple setup and use of ROOM, but I need to go the next level. We are researching the conversion of a Java application into an Android app. The application currently uses a SQLite RDBMS template which contains 11 tables. At least 2 of the tables are join tables without any primary key because of the nature of the application. The user can create and delete multiple RDBs, as well as perform the usual CRUD procedures on each. Any thoughts, suggestions of resources that may be useful are welcome.