今日書いたこと

「情報システムの品質」を構成する要素を3つ以上挙げ、その理由、定量的指標、品質保証のための対策を述べる。

  1. Userside
    1. Reliability=Stability+Security
    2. Usability ∋ Look&Feel affordance
  2. Administratorside
    1. Maintainability ∋ Agility
    2. Scalability

Each of them are deeply entangled and under a trade-off relation. We have to choose the balance depending on purpose and total cost of the task. When developing the system we also consider the quality of developer, which affects on the quality of the product.