What’s the point of this ask? A blockchain’s dataset isn’t arbitrarily editable by its users — there’s a very specific set of actions you can do, which are well defined, that modify the chain in a very structured manner… just as any API sitting in front of a database would do.

Obviously you can modify your local copy of the chain as you wish, even corrupting the data, but if your chain isn’t accepted by the public, your changes don’t mean shit. So you’re really only able to (meaningfully) execute those public-allowed operations