Which terms represent the two types of client requirements?

FUNCTIONAL AND NON-FUNCTIONAL

Client requirements is a statement of need, might then be prepared which is a first attempt to describe the possible requirements of the project. This may or may not result in the development of a new business project, and even if a project is necessary, it may not require a new building.

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The client's requirements for a project might initially include a vision, mission and objectives for what they wish the project to achieve. A statement of need, might then be prepared which is a first attempt to describe the possible requirements of the project.