A Distributed Medical Data Base; Network Software Design
Abstract This paper describes the software design aspects of a distributed medical data base, to be implemented on a homogeneous minicomputer loop network of PDP-11/45s, using the UNIX operating system. Eash user at a node, operating within a virtual user machine, is seen to interact with the file machines of either the local or distant node(s), through his local virtual network access machine. This last resource has two logical components: a switch, which routes messages, and a network interface.