You Model App time ok insert into address (id, address) values (1, `Av1`) update address set address=`Av2` where id=1 (1, Av1) select address from address where id=1 select address from address where id=1 (1, Av2) select output from model where id=1 (1, 150) output=150 and not 200.. ok Datomic was helpful, but ...