What is a Requirement?

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Essentials of IEEE Definitions of Requirement

1. A condition or capability needed by a user to solve a problem or achieve an objective 2. A condition or capability that must be met or possessed by a system or system component to satisfy a contract, standard, specification, or other formally imposed document

Requirement

A specification that must be met or satisfied

Verb Commonly Used for Functional Requirements

Indicate

Constraints

Limitations or restrictions on the system design or implementation

Other Expectations Important for Analysts to Find Out

Non-functional requirements

Questions Not Good to Ask Users

Questions that are not helpful in determining requirements

Functional Requirements

Requirements that describe what the system should do

Not Necessarily a Requirement

Something that is not essential or mandatory

Qualifying the Word 'Requirements'

To provide more specific details and characteristics


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