1. A computer implemented method for connecting business objects in a software application (SA), wherein the software application comprises a connector (K), wherein the connector comprises an identifier identifying an abstract business object class (ABO 1 to ABO n ), the software application, during runtime, determines the abstract business object class indicated by the connector in a hierarchy of abstract business object classes, and the software application is executed by a processor, and during runtime starting from the determined abstract business object class, determines at least one concrete business object class (KBO 1 to KBO n ) derived therefrom directly or indirectly, and establishes a connection (V) to at least one instance (I 1 to I n ) of the at least one determined concrete business object class, via which the software application accesses attributes and methods of the instance of the concrete business object class.