1. A method for designing a modeled object within a session of a computed-aided design system interacting with a database, the method comprising the steps of: detecting a designing operation performed by a user and applied to an initial modeled object within the session; computing a signature from a set of properties of the initial modeled object on which the designing operation has been applied and from a set of properties of the session, the set of properties of the session comprising at least a profile of the user performing the designing operation; retrieving from the database modeled objects having the closest signatures to the signature of the initial modeled object within the session; displaying representations of modeled objects retrieved; selecting by the user a modeled object among the representations of modeled objects displayed; and replacing, in a file storing the initial modeled object, the initial modeled object within the session by the modeled object selected.