SEMDA allows bidirectional communication. Local CMS can send request
to SEMDA to retrieve or modify data in RI- systems and return the results back to
the local CMS.
SEMDA behaves like server to the
connected local CMS and like a client to RI systems. SEMDA does not store or internally process any data! It passes them either to RI or to the local CMS.
Communication channels (queues) with particular local CMS are separated from each other. Clients do not share requests or data with other clients.