問17
頻出度★★☆
要件定義プロセスの不備に起因する問題はどれか。
平成31年度 春期 ITパスポート試験 問17
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 17
Incorrectア
Evaluating cost-effectiveness (return on investment) is a task of the planning process and investment evaluation that decides whether to start building a system. It is done in the stage before requirements definition, so an error here is a problem of the planning and evaluation stage, not a deficiency in requirements definition.
Incorrectイ
Prioritizing development projects is a task of IT strategy and planning (project selection) that decides which projects to allocate limited resources to. It is not a deliverable of requirements definition itself, so a misjudgment here does not amount to a deficiency in requirements definition.
Incorrectウ
The procedure for selecting the contractor (development vendor) is a task carried out in the procurement process. It is a separate step from requirements definition, which determines what to build; an inappropriate selection procedure is a problem of procurement management, not a deficiency in requirements definition.
- エ
正解 The requirements definition process is the step in which the users' operations are analyzed, the functions and business rules to be implemented in the system are clarified, and agreement is reached among the stakeholders. If this step is inadequate, development proceeds with the business rules to be incorporated into the system misunderstood, and the finished system ends up conflicting with the actual operations. Choice エ, “Incorrect interpretation of the business rules to be incorporated into the system”, is exactly a problem caused by failing to correctly define and agree on the requirements, so it is the correct answer.
ここがポイント
- The requirements definition process is the step that analyzes operations, clarifies the functions and business rules to be implemented in the system, and reaches agreement among stakeholders; its deficiency shows up as “getting the business rules wrong”.
- Cost-effectiveness evaluation and prioritization belong to planning/investment evaluation, and contractor selection belongs to the procurement process; distinguish these from requirements definition, as they are different steps.
用語