They mention the case where the ORM shadows the db schema. The argument isn't terribly salient, it's not like you can't build type checking in, it just means mo

They mention the case where the ORM shadows the db schema. The argument isn't terribly salient, it's not like you can't build type checking in, it just means more work if that's what you want to do. Essentially according to the author the only way to do it right if you have an existing db is to write all queries from scratch. My preferred solution for existing DBs is Ruby's Sequel or ROM if you want to go nuts. But I'm a diehard Rails lover and will choose ActiveRecord over all other solutions if I can. To me there's only one decent ORM and everything else is either good for special purposes or junk.