開發新系統和維持舊系統所需要資源 那個最大???

case1: If i develop new ERP System. The system needs three people which is  a PM, a AP, a P. They need  40 man days to develop totally.

case2: I needs maintenance ERP System. it is 5 years totally.


Which case needs largest source?

case1: If i develop new ERP System. The system needs three people which is  a PM, a AP, a P. They ne ...
student_abc 發表於 2015-12-30 20:40



    it depends..
if the program can be bridged easily then better develop new ERP system

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正常情況當然兮開發新的多啲嘢做, 所有嘢要重寫和重 test!
銀行的 core systems 都不會亂被重寫啦!
Progr ...
toylet 發表於 2015-12-30 21:01



    if using proper testing automation, should be no worry

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都多咗嘢做啦!
toylet 發表於 2015-12-30 21:13



    not really, it might be cheaper than maintaining legacy error prone system

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Always depends on the quality of the legacy system!
Rewriting/replacing old systems are always big  ...
toylet 發表於 2015-12-30 21:17

well the problem is legacy system is not properly tested

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