Idea Summary
You have the option to create the Tenant_ID field in every column. Fantastic!
When it is selected, you can create the tenant base table. and use an Application Item called Tenant_ID (that the developer must go and create) then in all the triggers BIU you can insert the proper line to fill the field.
Use Case
You unleash the SaaS option to the community
Preferred Solution (Optional)
Through Quick SQL, which is a fantastic tool that took development many-many levels ahead!
Then you can create a new app and add it in https://apex.oracle.com/en/learn/tutorials/ showing exactly how to create a multi-tenant application.