問4
頻出度★★☆
定義すべき要件を業務要件とシステム要件に分けたとき，業務要件に当たるものはどれか。
平成28年度 秋期 ITパスポート試験 問4
ストラテジ系システム企画 › 要件定義
This question's explanation and your answers so far.
解説
問 4
Incorrectア
“Availability rate of 99% or higher” is a level of performance and reliability demanded of the system, which is a non-functional requirement — that is, a system requirement. It is not a goal of the business itself, so it is incorrect.
Incorrectイ
“Encrypting the data” is a specification the system must have in order to ensure security, which is a non-functional requirement (a system requirement). It is not a business requirement, so it is incorrect.
Incorrectウ
“Using a web browser for screen display” specifies a means of implementing the system and a technical approach, which is a system requirement. It is not a business requirement expressing the ideal state of the business, so it is incorrect.
- エ
正解 A business requirement does not describe the specification of the system itself; rather, it expresses the “ideal state and goals of the business” — that is, how the business should be carried out and what outcomes it should achieve. Choice エ, “To reduce logistics costs, increase the automation rate of the warehouse outbound operations,” states a business goal (cost reduction) together with an improvement to a business process (outbound operations). Because it is defined from a business perspective without depending on any specific IT technology, it falls under business requirements. Therefore, the correct answer is エ.
ここがポイント
- A business requirement defines the business-side goals and processes of how to conduct the business and what to achieve, focusing on business outcomes such as cost reduction and improved work efficiency.
- A system requirement is a condition the system must satisfy in order to realize the business requirements, and consists of functional requirements plus non-functional requirements such as availability, security, and operability.
用語