A relational database contains a set of data and relations between the data of the set. The data may be representative of three dimensional modeled objects. For navigating in the database, the user selects a first data and a first relation; the second data related to the first data according to the first relation are searched. Then, a three-dimensional representation of objects represented by the second data is displayed to the user. When the user selects one of the displayed objects and a second relation, the second data representative of the selected object is identified. Then, third data related to the identified second data according to the second relation are found. A three-dimensional representation of objects represented by the third data is then displayed.The user may navigate in three-dimensional representations of the objects represented in the database, without any need to know and understand the structure of the database.