A database system comprising a database logic adapted to perform database processing and a backup interface for external backup, wherein the backup interface is adapted to connect the database sys-tem to a plurality of different external backup systems and wherein the backup interface is adapted to receive one or more plugged-in functions of the different external backup systems. The device tag also includes an electrical connector carried by the housing and constructed and arranged to provide an electrical connection between the battery operated device and the battery. The fire-blocking paper may include inorganic bio-soluble fiber, chopped glass non-respirable fibers, organic reinforcing fibers, organic binder, and inorganic binder or filler; and, optionally or refractory ceramic fibers. The back surface of the substrate and the cooling surface do not contact to each other in the large portion of the remaining area. The support body has a plastic material matrix for reducing the thermal conductivity, fillers which are embedded in the plastic material matrix for weight reduction andor for reducing the thermal conductivity, and reinforcing fibres which are embedded in the plastic material matrix for increasing the pressure resistance.