A method, system and computer program product are disclosed for using a Field Programmable Gate Array to simulate operations of a device under test. These techniques andor apparatuses enable representation andor generation of arbitrary waveforms using less memory than many current techniques, thereby reducing costs or memory size. Inferential user interaction data captures implicit user behavior of users of the database system, wherein the data is generated in relation to a feed. A particularly advantageous distribution of the opening force to the two contact points and a reliable switching operation is achieved in that one contact is arranged between the other contact and a point where the opening force acts on the contact bridge.