next previous contents
Next: Maintainability Up: Quality characteristics and subcharacteristics Previous: Usability


A set of attributes that bear on the relationship between the level of performance of the software and the amount of resources used, under stated conditions. (ISO 9126: 1991, 4.4)

NOTE -- Resources may include other software products, hardware facilities, materials, (e.g. print paper, floppy disks) and services of operating, maintaining or sustaining staff. (ISO 9126: 1991, 4.4)