![]() This feature concerns the users it indicates how effectively they can learn and use a system. If this factor is corrupted, data is lost due to a database error.Īll system components must follow a common and standard set of exchange formats to exchange data the lack of interoperability happens when people do not follow standards. ![]() S)ĭata integrity refers to maintaining and assuring data accuracy and consistency over its entire lifecycle. Will the system need to operate 24/7? What are the external factors that might affect it? (like snow, rain, and humidity. These factors concern the software’s environment. This feature is defined as the ability to control a system efficiently and keep it fully operational. These features are necessary even for stand-alone systems you don’t want anyone to have access to your sensitive data. ![]() Security measures ensure your software’s safety against espionage or sabotage. This feature indicates how easy it is to perform service when necessary. This feature indicates your system’s storage capacity, which is dependant on its type and characteristics. Recoverability is the ability to recover from a crash or a failure in the system and returning to full operations. This feature indicates the average time and ease and rapidity with which a system can be restored after a failure. This feature defines the amount of time the system is running, the time it takes to repair a fault, and the time between lapses. Reliability is the probability and percentage of the software performing without failure for a specific number of uses or amount of time. System performance defines how fast a system can respond to a particular user’s action under a certain workload. System performance is the most important quality in non-functional requirements and affects almost all the other preceding ones.įurthermore, reliability, availability, and maintainability (RAM) features fall exclusively under these requirements. Different types of non-functional requirements ![]() These features are usually expressed as constraints or criteria that define a level of freedom for developers or users.Īlthough non-functional requirements may seem a bit subtler, they are still as important as functional features, epics, and user stories. Non-functional requirements in an SRS document (software requirements specification) specify the quality attributes of a software system, such as responsiveness, usability, and reliability.Īs functional requirements indicate what a system must do, non-functional requirements support them and determine how the system must perform. ![]()
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