A system andor methodology to track and organize database application data in response to a delete, insert or update procedure. The method provides that a single evaluation quantity is formed from a set of a plurality of input quantities, and a plurality of the parameters are determined on the basis of the single evaluation quantity. During a biometric matching process, a template data manager integrated in query engine may use memory maps for real-time retrieval and comparison of biometric templates. The change from negative output impedance to positive output impedance occurs at a determined threshold frequency or determined transitional frequency band. The USB interface logic interacts with the computing device and allows computing device to detect the server board.