1. A method for designing a modeled object within a session of a computed-aided design system interacting with a database, the said 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 and/or a set of properties of the session; 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 the initial modeled object within the session by the modeled object selected.