A concise tutorial for soft exam system architecture designer | reverse engineering

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Reengineering

If the enterprise already has an old system , For existing systems , Develop a new system , This is used for reengineering .

Reengineering is the process of redeveloping existing software systems , Include Reverse engineering (Reverse Engineering, Reverse Engineering )、 Consideration of new needs （ Software refactoring ） and Forward engineering Three steps .

Reengineering can not only obtain design information from existing programs , It can also be used to reconstruct or reconstruct existing systems , To improve its comprehensive quality . commonly , Software personnel use reengineering to re implement existing programs , At the same time, add new functions or improve its performance .

Reverse engineering

among , Reverse engineering is the recovery process of design . Reverse engineering includes the following levels ：