Chapter 10 - Functional Requirements
Functional requirements are a part of requirements analysis (also known as requirements engineering), which is an interdisciplinary field of engineering that concerns the design and maintenance of complex systems. Functional requirements describe the desired end function of a system operating within normal parameters, so as to assure the design is adequate to make the desired product and the end product reaches its potential of the design in order to meet user expectations.
The requirements in requirement engineering help direct the development of the engineered product. Typically, a functional requirement is a basic functionality or desired behavior documented clearly and quantitatively. Requirements engineering ideas may be applied to more or less complex items. For example, when outlining the functional requirements for a jar, a functional requirement would be that it holds a fluid and have a threaded top for a lid to seal the jam for better preservation. When a product fails functional requirements, it usually means the product is of low quality and possibly entirely useless.
Functional requirements in systems engineering are complemented by technical requirements, which are also known as non-functional requirements. Technical requirements define what is required to deliver the desired function or behavior from a system to a user’s standards. Technical requirements can be performance factors, accessibility, versatility, logging, control and backup.
Functional requirements may be considered met even when the non-functional requirements are not. This can still mean that the product is unusable, such as in the consideration of performance requirements.
The requirements in requirement engineering help direct the development of the engineered product. Typically, a functional requirement is a basic functionality or desired behavior documented clearly and quantitatively. Requirements engineering ideas may be applied to more or less complex items. For example, when outlining the functional requirements for a jar, a functional requirement would be that it holds a fluid and have a threaded top for a lid to seal the jam for better preservation. When a product fails functional requirements, it usually means the product is of low quality and possibly entirely useless.
Functional requirements in systems engineering are complemented by technical requirements, which are also known as non-functional requirements. Technical requirements define what is required to deliver the desired function or behavior from a system to a user’s standards. Technical requirements can be performance factors, accessibility, versatility, logging, control and backup.
Functional requirements may be considered met even when the non-functional requirements are not. This can still mean that the product is unusable, such as in the consideration of performance requirements.
The functional requirements specify what it must do to satisfy the reasons of why that product exists. The Business Analyst when understands the necessary functionalities of the product, then these functional requirements are used to explain to the builder that what specifically has to build. The functionality of the product is determined during the trawling activity and the end result is a set of functional requirements. The requirements are written using two components: a description and a rationale. All the requirements must be written by a Business Analyst with no ambiguity.
ReplyDeleteFunctional Requirements are one of the most important type of requirements as recognizing them can and will module the scope of the product.The functionality of the product is determined during the trawling activity and the end result is a set of functional requirements.Technical requirements can be performance factors, accessibility, versatility, logging, control and backup.he requirements are written using two components: a description and a rationale. All the requirements must be written by a Business Analyst with no ambiguity.This blog has helped me a lot in understanding of this chapter.
ReplyDeleteAfter reading this blog I able to understand how functional requirements works. Functional requirement is a basic functionality or desired behavior documented clearly and quantitatively. The functionality of the product is determined during the trawling activity and the end result is a set of functional requirements.
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