Oracle7 Server Distributed Systems Volume I: Distributed Data
Server-to-Server Communication
Client-server architecture alone does not always meet the needs of a single logical database. The server also requires advanced server-to-server capabilities. These include SQL language requests to Oracle7 Servers and remote procedure calls (RPCs) to Oracle7 Servers.
It must be possible to make changes in the location, number, and function of servers in a complex environment as the information processing needs of the organization change over time. It is only through a complete server-to-server implementation that this can be achieved.