13Quality ConCePt and PersPeCtives
Detailed Descriptions of Quality Characteristics
ISO 9126 Standard defines quality characteristics as follows:
Functionality
Functionality is composed of the following attributes:
Suitability e software attribute that bears on the presence and
appropriateness of a set of functions for specified tasks.
Accuracy e software attribute that bears on the provision of right or
agreed results or effects.
Interoperability e software attribute that bears on its ability to
interact with specified systems.
Security e software attribute that bears on its ability to prevent
unauthorized access, whether accidental or deliberate, to programs
and data.
Functionality Compliance e software attribute that makes the soft-
ware ad ...