Non-functional testing in terms of testing databases involves various testing methods like stress testing, load testing, usability testing, security testing, etc that tests and validate the non-functional business requirements. It helps in the quantification of risks with regards to the database system in terms of how the system performs under heavy load. Addresses some of the following questions which help to mitigate the risks if detected earlier :
Does the system break?
Does the system slow down?
Are there any risks to the system as the load or stress on the system increases?
Is the system scalable and usable whenever new business requirements come in?
Non-functional testing also helps in identifying what are the minimum system requirements to run effectively without any limitations on hardware or software.
