Flexibility and Extensibility
Flexibility means the capability of the software to improve, change or remove the functionality without making damage to the existing system. On the other hand, extensibility is the capability to improve the functionality without making damage to a system. The variations in functionality might happen if the process of development is one of the iterative techniques or to modify the requirements. Modifications are certain in software development and so this is one of the most essential properties of quality software.
Practicality and Readability
Practicality is somewhat similar to flexibility, yet it stresses upon the alterations regarding minor function and error corrections changes, which are not main functional extensibilities. It must be bolstered with valuable interface descriptions, documentations and also code documentation or self-recording code. The more helpful and apt documentation exists; the greater practicality can be performed.
Execution and Efficiency
Execution is the most reaction time of the software. This reaction time must be in acceptable intervals and must not increase if the transaction count increases. Moreover, the resources are costly. Efficiency must be supported with the resource utilization.
A scalable system reacts to the action of clients in an adequate measure of time, regardless of whether the load increases. Obviously, more hardware will be included for taking care of increasing client transaction, but the design must not be changed while actually doing this. This is known as vertical scalability. In case the software can perform multiple processing (capacity to run on several increasing count of machines), this is named as horizontal scalability. A reliable scalable system can suit both of these methods.
Availability, Robustness, Fault Tolerance and Reliability
Robust software avoids losing its availability, not even in the failure states too. It constantly runs in case some of the constituents are broken down. Additionally, regardless of whether the entire application smashes, it might recover itself by making use of a backup hardware and data with fault tolerance techniques. Reliability signifies the consistency and integrity of software even under high load situations. So, this is relevant with scalability and availability.
Ease of Use and Accessibility
The most recognized belief for this aspect is keeping it simple. According to the user’s point of view, user-interface is one of the visible parts of software. So, the simpler it is, the lesser time it takes to finish a job. Usable software facilitates various types of accessibility control for the individual with inabilities.
Platform Compatibility and Portability
Quality software runs on different platforms and as such a large number of people make use of it. In various contexts various platforms are discussed; this might be OS platforms, types of browsers, etc. Moreover, the portability is regarding adapting software which can run on various platforms, for being more platforms compatible. In such a way, portability is related with the flexibility.
Testability and Manageability
Quality software needs quality testing. Source code must be tested with the most effective testing techniques. This can be executed by making use of patterns, interfaces, low coupling, encapsulation, etc. processes accurately. Other than testability, qualified software must be flexible after the arrangement. It might be monitored, for example, data usage or performance status or might assist the developer to configure the system very easily. Making an effective logging system is the other essential issue about the manageability.
Security is an important concern on software development, particularly for the mobile or web-based ones that might have a great number of clients with the aptitude of remote accessing to the system. You must develop a security approach and accurately apply it by leaving no entry points. This might include verification and approval strategies, data encryption, and network attack protection, etc.
Functionality or Correctness
Functionality or the correctness is the conformity of the software with the actual specifications and requirements. In reality, this is the essential attribute of an application and perhaps not a quality factor. Quality aspects are not expressive in respect to unfunctional software. Very first, perform the desired functionality and generate correct software and then only apply the quality factors to it. If both performed side by side, then it is the best.
The above-mentioned software quality assurance aspects have helped a lot in improving and controlling the whole process and this will help in the future as well.
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