Managing Software Deliverables: A Software Development Management Methodology

The degree to which a system's features and capabilities meet the user's needs.

The degree to which a system or component performs its designated functions with minimum consumption of resources.

A subsystem, component, or unit; either software or hardware, as defined by the project.

Maintenance performed to provide additional functional or performance requirements.

Represents persons, places, events, things, or abstractions that are relevant to the state and about which data is collected and maintained.