It’s funny how “best practices” get mirrored basically everywhere up and down the stack. Everything at some point will have some way of decoupling data-access and data-structure, you just choose the level you want to do it at (toolkit, ORM, network api, database, schema/view, tablespace, filesystem...) and the number and granularity of layers, picking what you are most comfortable with.

It’s like, no matter how low-level you go, at some point someone had a problem with components being tightly coupled and introduced an indirection layer “for next time”.