In this paper we give a technical description of the PRIME system prototype. PRIME allows us to provide an operational side to the theoretical work we have done in the “Modelling and Multimedia Information Retrieval” (MRIM) team. PRIME is designed to provide a generic way to express the storing, manipulating and retrieval of multimedia data. These tasks are separated into two parts, namely the strict database tasks and the information retrieval tasks. This paper focus on this generic part, and we address more specifically the problem of managing and retrieving images. We describe the implementation of a medical application managing Magnetic Resonance Images based on the generic core.