The DP4 Database Management System is based on a client/server architecture. Application programs are clients that issue requests, and a server processes the requests:
The communications between the client and the server are transparent to your application. Your application issues a request, and the database manager processes the request. The application does not need to know whether the data is held on the workstation or on a server on the network.
The following sections outline the possible DP4 configurations from simple standalone configurations through to DP4 Resilience, and list the network protocols supported by DP4.