An information processing device receives a request signal, read out a user class or a storage region class the request signal requests, and generates an object corresponding to the read-out class, wherein each user class is a class relating to users and each storage region class is a class relating to storage regions utilized by the users, based on the generated object and the request signal. The information processing device executes a method corresponding to the object, and thereby acquire data corresponding to the request signal. The information processing device outputs the acquired data.