System Architecture

The DRIVER system is implemented on an open service-oriented software architecture logically organised in areas as shown in the figure below. This architecture guarantees service extensibility and interoperability, system expandability and local repository autonomy. The DRIVER deployment may include multiple instances of the services identified, in order to guarantee better quality of service (e.g., availability, performance) or to support diverse functionality (e.g., different query languages). These instances, which may have either the same or a different configuration, are distributed on different sites /physical locations managed by the coordinating bodies. Choice of sites and allocation and distribution of the service instances are driven by both organisational and technical quality parameters, e.g., independence, security, availability, performance, etc.