参考：
http://www.sqa.net/iso9126.html
https://zhuanlan.zhihu.com/p/111667305
The full table of Characteristics and Subcharacteristics for the ISO 9126-1 Quality Model is:-
| Characteristics | Subcharacteristics | Definitions |
|---|
| |
Suitability |
This is the essential Functionality characteristic and refers to the appropriateness (to specification) of the functions of the software. |
| |
Accurateness |
This refers to the correctness of the functions, an ATM may provide a cash dispensing function but is the amount correct? |
| Functionality |
Interoperability |
A given software component or system does not typically function in isolation. This subcharacteristic concerns the ability of a software component to interact with other components or systems. |
| |
Compliance |
Where appropriate certain industry (or government) laws and guidelines need to be complied with, i.e. SOX. This subcharacteristic addresses the compliant capability of software. |
| |
Security |
This subcharacteristic relates to unauthorized access to the software functions. |
|
| |
Maturity |
This subcharacteristic concerns frequency of failure of the software. |
| Reliability |
Fault tolerance |
The ability of software to withstand (and recover) from component, or environmental, failure. |
| |
Recoverability |
Ability to bring back a failed system to full operation, including data and network connections. |
|
| |
Understandability |
Determines the ease of which the systems functions can be understood, relates to user mental models in Human Computer Interaction methods. |
Usability |
Learnability |
Learning effort for different users, i.e. novice, expert, casual etc. |
| |
Operability |
Ability of the software to be easily operated by a given user in a given environment. |
|
Efficiency |
Time behavior |
Characterizes response times for a given thru put, i.e. transaction rate. |
| |
Resource behavior |
Characterizes resources used, i.e. memory, cpu, disk and network usage. |
|
| |
Analyzability |
Characterizes the ability to identify the root cause of a failure within the software. |
| Maintainability |
Changeability |
Characterizes the amount of effort to change a system. |
| |
Stability |
Characterizes the sensitivity to change of a given system that is the negative impact that may be caused by system changes. |
| |
Testability |
Characterizes the effort needed to verify (test) a system change. |
|
| |
Adaptability |
Characterizes the ability of the system to change to new specifications or operating environments. |
| Portability |
Installability |
Characterizes the effort required to install the software. |
| |
Conformance |
Similar to compliance for functionality, but this characteristic relates to portability. One example would be Open SQL conformance which relates to portability of database used. |
| |
Replaceability |
Characterizes the plug and play aspect of software components, that is how easy is it to exchange a given software component within a specified environment. |
|
软件质量铁三角
流程：从计划到策略的实现，流程就是按照这种思维方式指导软件开发的，并且流程来源于成功的经验，可以指导项目少走弯路，从而提高软件质量，不仅如此，流程还对项目的成本和进度控制有很大的帮助
技术：包括了分析技术、设计技术、编码技术、测试技术，需求是项目的灵魂，良好的需求分析便是项目成功的关键所在，若是需求分析做不好不可避免的要出现返工；设计，软件的质量是设计出来的，良好的设计基本上决定了软件产品的最终质量；编码技术产生正确高效的代码；测试是保证软件的一道防线。所以各种技术对质量来说都是很重要的
组织：好的组织可以有效的促进流程的实施，同时提供员工的发展通道以吸引更多的人（技术的载体）
软件既是被设计出来的，也是被测试出来的。
