ranked order. Functional requirements describes the
possible effects of a software system, in other
words, what the system must accomplish. Other kinds
of requirements (such as interface requirements,
performance requirements, or reliability
requirements) describe how the system accomplishes
its functional requirements. Each functional
requirement should be specified in a format similar
to the following:
Short, imperative sentence stating highest ranked
functional requirement.
Description
A full description of the requirement.
Criticality
Describes how essential this requirement is to the
overall system.
Technical issues
Describes any design or implementation issues
involved in satisfying this requirement.
Cost and schedule
Describes the relative or absolute costs associated
with this issue.
Risks
Describes the circumstances under which this
requirement might not able to be satisfied, and
what actions can be taken to reduce the probability
of this occurrence.
Dependencies with other requirements
Describes interactions with other requirements.
... others as appropriate
And so forth...
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