A Queueing Model of an Insurance Database Interactive System, Comparison of Modelling Methods.

The article presents a queueing model of a computer network which is installed at a branch of the largest Polish insurance company. The network is used to store and use documents related to company clients. Our model concentrates on the database server and applications used to retrieve and modify the documents. The model is based on measurements gathered in this system. Our goal is twofold: (i) elaborate a tool that is able to predict the performance of the system in case of modifications (more terminals, more servers) (ii) compare the usefulness of several analytical methods implemented in this case-study.