How do you gather non-functional requirements?

To collect the requirement, analyse them from performance testing perspective and finalise the quantitative NFRs; all these steps fall under the NFR gathering phase of PTLC (Performance Test Life Cycle). All the requirements are documented, categorized and concluded in the Non-Functional Requirement Document.

What are non-functional requirements and how do you capture them?

Functional vs Non Functional Requirements

Functional Requirements	Non Functional Requirements
It is captured in use case.	It is captured as a quality attribute.
Defined at a component level.	Applied to a system as a whole.
Helps you verify the functionality of the software.	Helps you to verify the performance of the software.

Which is non-functional requirements collected for the developers?

Simply said, a non-functional requirement is a specification that describes the system’s operation capabilities and constraints that enhance its functionality. These may be speed, security, reliability, etc.

Which documents are used to capture non-functional requirements?

UC4 documents all the requirements (FRs and NFRs) in the epics and user stories. DoD and acceptance criteria (at user story, task and ticket levels) are used for documenting NFRs.

Why do we need non-functional requirements?

The nonfunctional requirements ensure the software system follow legal and compliance rules. They ensure the reliability, availability, and performance of the software system. They ensure good user experience and ease of operating the software. They help in formulating security policy of the software system.

How do non-functional requirements affect the design of a system?

Nonfunctional Requirements (NFRs) define system attributes such as security, reliability, performance, maintainability, scalability, and usability. They serve as constraints or restrictions on the design of the system across the different backlogs. NFRs influence all backlogs: Team, Program, Solution, and Portfolio.

What are the non functional testing techniques?

7 Types of Non Functional Testing

• Performance Tests.
• Load Tests.
• Stress Tests.
• Volume Tests.
• Security Tests.
• Upgrade & Installation Tests.
• Recovery Tests.