The invention relates to a method for matching at least one volume of search data (1) with at least one volume of object data (2) using a communication network consisting of terminals (E1, E2) and at least one database system (DB) operated by a data-processing device. According to the method, a hierarchically structured volume of meta data in the form of a meta tree (3) is generated and operated in the database system. The volume of meta data is then called on a first terminal, the at least one volume of search data is allocated to the volume of meta data to generate at least one search property tree (6) and the at least one search property tree is transmitted to the database system. The volume of meta data is called (8) on a second terminal, the at least one volume of object data is allocated to the volume of meta data to generate at least one object property tree (10) by means of the database system and to transmit (11) the object property tree to the database system. The database system compares (12) the at least one search property tree (6) with the at least one object property tree (10) to determine a degree of match. At least one volume of object data is finally output (13) on one of the terminals, the respective object property tree thereof having the highest degree of match with at least one of the search property trees.