A method for searching data stored in at least one database (32, 34) accessible from an external server of a data transmission network (14), including sending a query (36) for every database from a local server associated with at least one local database (12), the query including fields containing general criteria relating to the type of information, the content of the information, and/or dates associated with the information, with the ability to link the fields by Boolean operators. The download step includes: generation of scripts by the local server including a series of commands based on the general criteria and enabling creation of pointers to identify the data fields to be downloaded, and activating robots to download the fields indicated by the pointers and other data fields associated by predefined relationships with the indicated data fields.