Functionality
Suitability
Attributes of software that
bear on the presence and appropriateness of a set of functions for
specified tasks
Accurateness
Attributes of software that bear on the provision of
right or agreed upon results or effects
Interoperability
Attributes of software that bear on its ability to
interact with specified systems
Compliance
Attributes of software that make the software adhere
to application-related standards or conventions or
regulations in laws and similar prescriptions
Security
Attributes of software that bear on its ability to prevent unauthorized access, whether accidental
or deliberate, to programs or data
Reliability
Fault tolerance |
Attributes of software that bear on its ability to
maintain a specified level of performance in
case of software faults or of infringement of its specified interface
Recoverability
Attributes of software that bear on the capability to
re-establish its level of performance and
recover the data directly affected in case of a failure and on the time and
effort needed for it
Usability
Understandability
Attributes of software that bear on the users’ effort
for recognizing the logical concept and its
applicability
Learnability
Attributes of software that bear on the users’ effort
for learning its application
Operability
Attributes of software that bear on the users’ effort
for operation and peration control
Efficiency
Time behavior |
Attributes of software that bear on response and
processing times and on throughput rates in
performing its function
Resource behavior
Attributes of software that bear on the amount of
resources used and the duration of such use in performing its function
Maintainability
Analyzability
Attributes of software that bear on the effort needed
for diagnosis of deficiencies or causes of
failures or for identification of parts to be modified
Changeability
Attributes of software that bear on the effort needed
for modification, fault
removal, or environmental change
Stability
Attributes of software that bear on the risk of
unexpected effect of modifications
Testability
Attributes of software that bear on the effort needed
for validating the modified software
Portability
Adaptability
Attributes of software that bear on the opportunity
for its adaptation to different specified
environments without applying other actions or means than those provided for
this purpose for the software considered
Installability
Attributes of software that bear on the effort needed
to install the software in a specified
environment
Conformance
Attributes of software that make the software adhere
to standards or conventions relating to
portability
Replaceability
Attributes of software that bear on opportunity and
effort using it in the place of specified
other software in the environment of that software
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