問19
頻出度★★☆
要件定義プロセスに含まれる作業はどれか。
平成21年度 秋期 ITパスポート試験 問19
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 19
Incorrectア
Creating and approving the systemization plan is a task of the planning process (systemization concept and systemization plan) that comes before requirements definition. It is the stage that decides the scope of the target operations, the development structure, the schedule, and the rough cost, and it is not part of the requirements definition process.
Incorrectイ
Carrying out the detailed system design is a task of the development process (the design stage), performed on the basis of the requirements fixed in requirements definition. It is the stage that decides how to build the system, and it comes after the requirements definition process, which decides what is needed.
Incorrectウ
Forecasting the system investment effect and the systemization cost is a task carried out in the systemization plan of the planning process for the purpose of investment decision making. Estimating cost effectiveness is not requirements definition itself, but the planning and investment decision work that precedes it.
- エ
正解 エ is correct. The requirements definition process draws out what stakeholders such as system users and business departments want to achieve, organizes it into business requirements, functional requirements, and non-functional requirements, and reaches agreement on the requirements among the parties involved (agreement on requirements). Therefore, organizing the needs of system users is exactly the central task of the requirements definition process. The requirements organized here become the input for the later design and development.
ここがポイント
- Order of the stages in the Common Frame: planning (systemization concept and systemization plan) to requirements definition to development (design and implementation) to operation and maintenance. Be able to tell which task belongs to which stage.
- The content of the requirements definition process is clarifying and organizing the needs of stakeholders, business requirements definition, and agreement on the requirements. It is the stage that decides what to achieve, and must be distinguished from how to build it (design) and whether to do it at all (planning and investment decision).
用語