Abstract: A measuring device (10) comprises at least one measuring unit (35), each for executing at least one measurement function, and an application control unit (40) for controlling and/or administering competing processes caused by plural application interfaces acting and/or cooperating with the measuring device. Each application interface represents an application initiating and/or executing at least one measurement function, or a part thereof, and/or handling a measurement result of at least one measurement function.

Abstract: The present invention concerns a method for data management, wherein data are entered and processed on at least one mobile computer (20) provided with a software program (front end); data are collected and stored on at least one central computer (40, 50) by means of a software program (back-end system), wherein an exchange of data between the at-least one mobile computer (20) and the at-least one central computer (40, 50) is carried out via at least one local computer (30); and the software (middleware) of the local computer (30) serves at least also for intermediate conversion and interface control.