Explain the design principles, Software Engineering

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Explain the design principles.

The design process should not endure from tunnel vision.
The design should be traceable to the analysis model.
Design should not reinvent the wheel.
The design should minimize the intellectual distance among the software and problem as it exists in the real world.
The design should be structured to degrade gently, even when aberrant data, events or operating conditions are encountered.
Design is not coding, coding is not design.
The design should be assessed for quality as it is being formed, not after the fact.

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