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Unformatted text preview: Chapter Two, Magal: if I were you, I'd also read the chapter summary on page 47 2.1 ENTERPRISE SYSTEM aka ES 3 broad stages of evolution include: 1. mainframe environment 2. client-server systems 3. service oriented architecture (SOA) 2.1.1 Stage One: Stand-Alone Mainframe Systems Components: 1. hardware (includes mainframe computers) 2. software (specialized operating systems needed to execute operations from the applications on the hardware and custom applications that provide capabilities needed to complete specific tasksbasically, microsoft word) 3. database (store data associated with ES) Drawbacks of early mainframe architecture (why?): 1. scalability (determined by hardware/software combination; too many people=slow; upgrade to raise your scalability) 2. custom design (custom design=expensive and other companies can't use it; SAP came up with the packaged applications approach which provided a generic form of software) 3-tier client-server led to explosive growth of ES 2.1.2 Client-Server Architecture2....
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This note was uploaded on 12/07/2010 for the course MIST 2090 taught by Professor Piercy during the Fall '08 term at University of Georgia Athens.
- Fall '08