Process for modelling an information system, in order to measure performance and monitor service quality for this information system. Data relating to a first Instance are collected on the first Instance or on one or several other Instances. These collected data are attached to this first Instance via...http://www.google.de/patents/US6061724?utm_source=gb-gplus-sharePatent US6061724 - Modelling process for an information system, in particular with a view to measuring performance and monitoring the quality of service, and a measurement and monitoring system implementing this process