Software Engineering and Software Testing > Software Design > Structured Design

Structured Design

Structured design is a conceptualization of problem into several well-organized elements of solution. It is basically concerned with the solution design. Benefit of structured design is,

• It gives better understanding of how the problem is being solved.
• Structured design also makes it simpler for designer to concentrate on the problem more accurately.
• Structured design is mostly based on ‘divide and conquer’ strategy where a problem is broken into several small problems and each small problem is individually solved until the whole problem is solved.
• The small pieces of problem are solved by means of solution modules.
• Structured design emphasis that these modules be well organized in order to achieve precise solution. These modules are arranged in hierarchy. They communicate with each other.

A good structured design always follows some rules for communication among multiple modules, namely:

 Cohesion - grouping of all functionally related elements.

Coupling - communication between different modules.

A good structured design has high cohesion and low coupling arrangements.

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