3.4 The client-Server Architecture a distributed system is a system in which: computations are performed by separate programs normally running on separate pieces of hardware that co-operate to perform the task of the system server a program that provides a service for other programs that connect to it using a communication channe Client a program that accesses a server (or several servers )to obtain services a server may be accessed by many clients simultaneously www.oseng.com O Lethbridge/Laganiere 2001 Chap 3: Basing Development on Reusable© Lethbridge/Laganière 2001 Chap. 3: Basing Development on Reusable Technology 10 3.4 The Client-Server Architecture A distributed system is a system in which: • computations are performed by separate programs • … normally running on separate pieces of hardware • … that co-operate to perform the task of the system. Server: • A program that provides a service for other programs that connect to it using a communication channel Client • A program that accesses a server (or several servers) to obtain services • A server may be accessed by many clients simultaneously