Akka Data Access Actors

An actor model gives us outstanding solution for building of high scale and high load systems. Those of you who work with Akka, know that in the Actor model everything should be represented as an actor. In some sense this axioma simplifies a software development. Is this circumstance as good as it seems? In this article I'm going to demonstrate some approaches which may be applied to actors which need to interact with a database. Just imagine, what sense in a high scale and high load system if it does not communicate with a database?