Requirement Engineering

derive

maintain a systems requirements document

validate

why re important

influence the development cost, time, effort, and quality of the product.

essential contributor to the overall quality of the software product.

functional re

a requirement that specifies a function that a system or system component must be able to perform

characteristic

Describe how the system should and/or should not behave in particular situations.

Tell you and your users how the system should react to certain inputs.

Describe services a system or component of a system should perform.

non-functional re

A requirement that specifies quality characteristics/attributes of the software and constraints of the software to be developed and/or process to develop the software.

example

quality

Delivery

Security

Reliability

constraints

Skill-set of the developers.

Software process that should be followed.

Programming language to develop the system

1-A condition or capability needed by a user to solve a problem or achieve an objective

3-A documented representation of a condition or capability as in (1) and (2).”

2- A condition or capability that must be met or possessed a system or system component

satisfy a contract

satisfy standard

satisfy specification