If you have something very “simple”, maybe the best option is to go to a micro-framework, like: Silex or Lumen.
They have connection to BD, user Auth, and can create API to serve to client’s.
I see the DreamFactory a more advanced API builder, like a big machine, more than a tool to use.
You can use to DreamFactory to build what you want, but require more installation, configuration, prepare roles and permissions, etc… then create/move the table to same database used by DF (not required, but to me recommended), define a Service or Scripting to manage the content or serve through the API.