DB Table Processor?

[A. Shore]

Folks, I'm considering developing a particular app in Python - I've
been working in PHP for some years now - and it will be db-intensive.
Whether it's based on sqllite or mySQL is TBD as of right now.

One tool that's done me well in the past is a generalized table
processor, which I use as a way of getting early visualization into
the app's requirements.  That is, given an existing schema, it will
generate or perform the C R U D  functions on each table comprising
the schema, with no/little code needing to be written.

I've searched without success in trying to locate some - hopefully FOS
- py-based utility that will do this for me.

Thanks for any URL/information.  AS