Задача: Идентификация ключевых системных функций

Эта задача определяет ключевые системные функции.

Дисциплины: System Engineering Architecture

Назначение

The purpose of this task is to group the system functions into sub-sets to support the analysis of alternatives during architectural analysis.

Взаимосвязи

Родительские практики выполнения	Системная инженерия - прецедентный подход
Роли	Основной исполнитель: System Architect	Дополнительные исполнители:
Входы	Обязательный: Системная операция Спецификация системных требований Спецификация требований заинтересованных лиц	Необязательный: Нет
Выходы	Ключевые системные функции Отчет по исследованию и выбору решений

Основное описание

The use-case black-box activity diagrams created during functional analysis are reviewed to group the action nodes into key system functions. Possible criteria for grouping system functions are:

the system functions are cohesive and/or tightly coupled;
the system functions may be realized by a single architectural component;
the system functions will be realized by reuse of an existing component (HW/SW);
the system functions will be reused within the system; or
the system functions address a specific design constraint.

Шаги

Select Use-Case Black-Box Activity Diagram

This task will be performed for each use-case black-box activity diagram. Select a use-case black-box activity diagram and perform the following steps.

Identify related system functions

Review the subject activity diagram and identify action nodes that are related. Define a set of key system functions that describe the set of action nodes and establish traceability from each action node to one or more key system functions.

Repeat steps for each use-case black-box activity diagram

Repeat the previous steps for each use-case black-box activity diagram. For each new activity diagram review and refine the list of key system functions and associated action nodes if needed. Update the traceability record as required, capturing the relationships between action nodes and key system functions.

Capture the Key System Functions

Capture the results of the work completed in the Trade Study Report.

Дополнительные сведения

Рекомендации	Traceability
Руководства по инструментам	Maintaining the Trade Study Report in DOORS