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functional requirement comparison table
Subject be is a kind of is a subtopic of describe has definition
requirementverifiablesubject4.4 - What Is a Requirement?the domainA statement about what the proposed system will do that all stakeholders agree must be made true in order for the customer's problem to be adequately solved
functional requirementconsistent with project planrequirement4.5 - Types of Requirementswhat the system should do, i.e. the services provided for the users and for other systemsA requirement that describes a service provided by a system

Next requirement: implicit requirement    Up: requirement    Previous requirement: realistic requirement