It is now possible to run queries when a user signs-up or signs-in, by specifying multiple queries within an ON SIGNUP (…) clause, or a ON SIGNIN (...) clause.
Only store read-write statement status in the database for statements which can be either read or write. For those statements which are always write statements (Live, Kill, Create, Update, Delete, Relate, Insert, Upsert, Define, Remove….), then hardcode this on the statement itself.