Datalog writebacks through derived columns. Any query. Any cell. And probably any datalog-based database too, it's just a client-side trick. Works well on this:

Datalog writebacks through derived columns. Any query. Any cell. And probably any datalog-based database too, it's just a client-side trick. Works well on this: {:find [?title ?director ?rating ?card ?shout] :where [[?m :movie/title ?title] [?m :movie/vote-average ?rating] [(str ?rating) ?rating-str] [(concat ?title ": ") ?title-colon] [(concat ?title-colon ?rating-str) ?card] [(lower ?title) ?lowered] [(concat ?lowered "!!!") ?decorated] [(upper ?decorated) ?shout] ;; joints [?cr :crew/job "Director"] [?cr :crew/movie ?m] [?cr :crew/person ?p] [?p :person/name ?director]]} You can edit a movie's ?title and ?rating through the ?card column for instance. It supports arithmetics too (to the extent that it's logically feasible of course).