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i am often surprised to find that many developers today still do not really understand what is meant by a "client server" architecture or what the difference between "tiers" and "layers" is. so i thought i would post the following explanation which, if not universally accepted, has served me well over the past 10 years.
evolution of client/server systems
computer system architecture has evolved along with the capabilities of the hardware used to run applications. the simplest (and earliest) of all was the "mainframe architecture" in which all operations and functionality are contained within the central (or "host") computer. users… Continue reading